Cormen, T., & Balkcom, D. (n.d.). Representing graphs (article) | Algorithms. Retrieved November 19, 2020, from https://www.khanacademy.org/computing/computer-science/algorithms/graph-representation/a/representing-graphs
Sarada, H. (2014, Oct. 15). Graph Theory: 01. Seven Bridges of Konigsberg [Video]. YouTube. https://youtu.be/eIb1cz06UwI
Sarada, H. (2014, Oct. 17). Graph Theory: 02. Definition of a Graph [Video]. YouTube. https://youtu.be/S1Zwhz-MhCs