APA (7th ed.) Citation

Harary, F., Norman, R. Z., & Cartwright, D. (1965). Structural models: An introduction to the theory of directed graphs. Wiley.

Chicago Style (17th ed.) Citation

Harary, Frank, Robert Zane Norman, and Dorwin Cartwright. Structural Models: An Introduction to the Theory of Directed Graphs. New York: Wiley, 1965.

MLA (9th ed.) Citation

Harary, Frank, et al. Structural Models: An Introduction to the Theory of Directed Graphs. Wiley, 1965.