Cita APA (7a ed.)

Bollob s, B. (1979). Graph theory: An introductory course. Springer-Verlag.

Cita Chicago Style (17a ed.)

Bollob s, B‚la. Graph Theory: An Introductory Course. New York: Springer-Verlag, 1979.

Cita MLA (9a ed.)

Bollob s, B‚la. Graph Theory: An Introductory Course. Springer-Verlag, 1979.