Cita APA (7th ed.)
Biggs, N. L. (2002). Discrete mathematics (2nd ed.). OUP.
Cita Chicago (17th ed.)
Biggs, Norman L. Discrete Mathematics. 2nd ed. New Delhi: OUP, 2002.
Cita MLA (9th ed.)
Biggs, Norman L. Discrete Mathematics. 2nd ed. OUP, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.