diff --git a/src/data-structures/graph/Graph.js b/src/data-structures/graph/Graph.js
index 18c7a70f..f9e69238 100644
--- a/src/data-structures/graph/Graph.js
+++ b/src/data-structures/graph/Graph.js
@@ -1,6 +1,6 @@
 export default class Graph {
   /**
-   * @param isDirected {boolean}
+   * @param {boolean} isDirected
    */
   constructor(isDirected = false) {
     this.vertices = {};
@@ -8,7 +8,7 @@ export default class Graph {
   }
 
   /**
-   * @param newVertex {GraphVertex}
+   * @param {GraphVertex} newVertex
    * @returns {Graph}
    */
   addVertex(newVertex) {
@@ -18,7 +18,7 @@ export default class Graph {
   }
 
   /**
-   * @param vertexKey {string}
+   * @param {string} vertexKey
    * @returns GraphVertex
    */
   getVertexByKey(vertexKey) {
@@ -26,7 +26,7 @@ export default class Graph {
   }
 
   /**
-   * @param edge {GraphEdge}
+   * @param {GraphEdge} edge
    * @returns {Graph}
    */
   addEdge(edge) {
@@ -62,8 +62,8 @@ export default class Graph {
   }
 
   /**
-   * @param startVertex {GraphVertex}
-   * @param endVertex {GraphVertex}
+   * @param {GraphVertex} startVertex
+   * @param {GraphVertex} endVertex
    */
   findEdge(startVertex, endVertex) {
     const vertex = this.getVertexByKey(startVertex.getKey());
@@ -71,7 +71,7 @@ export default class Graph {
   }
 
   /**
-   * @param vertexKey {string}
+   * @param {string} vertexKey
    * @returns {GraphVertex}
    */
   findVertexByKey(vertexKey) {
diff --git a/src/data-structures/graph/GraphEdge.js b/src/data-structures/graph/GraphEdge.js
index 386857ff..5dc565bb 100644
--- a/src/data-structures/graph/GraphEdge.js
+++ b/src/data-structures/graph/GraphEdge.js
@@ -1,8 +1,8 @@
 export default class GraphEdge {
   /**
-   * @param startVertex {GraphVertex}
-   * @param endVertex {GraphVertex}
-   * @param weight {number}
+   * @param {GraphVertex} startVertex
+   * @param {GraphVertex} endVertex
+   * @param {number} [weight=1]
    */
   constructor(startVertex, endVertex, weight = 1) {
     this.startVertex = startVertex;
diff --git a/src/data-structures/graph/GraphVertex.js b/src/data-structures/graph/GraphVertex.js
index a598af16..c0f99122 100644
--- a/src/data-structures/graph/GraphVertex.js
+++ b/src/data-structures/graph/GraphVertex.js
@@ -13,7 +13,7 @@ export default class GraphVertex {
   }
 
   /**
-   * @param edge {GraphEdge}
+   * @param {GraphEdge} edge
    * @returns {GraphVertex}
    */
   addEdge(edge) {
@@ -22,6 +22,9 @@ export default class GraphVertex {
     return this;
   }
 
+  /**
+   * @returns {GraphVertex[]}
+   */
   getNeighbors() {
     const edges = this.edges.toArray();
 
@@ -35,7 +38,7 @@ export default class GraphVertex {
   }
 
   /**
-   * @param requiredEdge {GraphEdge}
+   * @param {GraphEdge} requiredEdge
    * @returns {boolean}
    */
   hasEdge(requiredEdge) {
@@ -47,7 +50,7 @@ export default class GraphVertex {
   }
 
   /**
-   * @param vertex {GraphVertex}
+   * @param {GraphVertex} vertex
    * @returns {boolean}
    */
   hasNeighbor(vertex) {
@@ -58,6 +61,10 @@ export default class GraphVertex {
     return !!vertexNode;
   }
 
+  /**
+   * @param {GraphVertex} vertex
+   * @returns {(GraphEdge|null)}
+   */
   findEdge(vertex) {
     const edgeFinder = (edge) => {
       return edge.startVertex === vertex || edge.endVertex === vertex;
@@ -76,7 +83,7 @@ export default class GraphVertex {
   }
 
   /**
-   * @param callback {function}
+   * @param {function} [callback]
    * @returns {string}
    */
   toString(callback) {