Cita APA (7th ed.)

Biggs, N. L. (1989). Discrete mathematics. Clarendon Press.

Cita Chicago (17th ed.)

Biggs, Norman L. Discrete Mathematics. Oxford: Clarendon Press, 1989.

Cita MLA (9th ed.)

Biggs, Norman L. Discrete Mathematics. Clarendon Press, 1989.