Cita APA (7th ed.)

Harary, F. (1973). New directions in the theory of graphs. Academic Press.

Cita Chicago (17th ed.)

Harary, Frank. New Directions in the Theory of Graphs. Nueva York: Academic Press, 1973.

Cita MLA (9th ed.)

Harary, Frank. New Directions in the Theory of Graphs. Academic Press, 1973.