Fran, F., Alexander, Yundari, Putri Romanda, and Ervina Febyolga. “The Complexity of Octopus Graph, Friendship Graph, and Snail Graph”. EduMatSains : Jurnal Pendidikan, Matematika Dan Sains, Vol. 9, no. 1, July 2024, pp. 84-101, doi:10.33541/edumatsains.v9i1.6042.