Παραπομπή APA

Harary, F., & Palmer, E. M. (1973). Graphical enumeration. Academic Press.

Παραπομπή Chicago Style

Harary, Frank, και Edgar M. Palmer. Graphical Enumeration. New York: Academic Press, 1973.

Παραπομπή MLA

Harary, Frank, και Edgar M. Palmer. Graphical Enumeration. Academic Press, 1973.