Παραπομπή APA

Harary, F. (1969). Proof techniques in graph theory: Proceedings of the second Ann Arbor graph theory conference 1968.

Παραπομπή Chicago Style

Harary, Frank. Proof Techniques in Graph Theory: Proceedings of the Second Ann Arbor Graph Theory Conference 1968. 1969.

Παραπομπή MLA

Harary, Frank. Proof Techniques in Graph Theory: Proceedings of the Second Ann Arbor Graph Theory Conference 1968. 1969.