Cita APA (7th ed.)

Graham, R. L. (1990). Ramsey theory (2an ed.). Wiley.

Cita Chicago (17th ed.)

Graham, Ronald L. Ramsey Theory. 2an ed. New York: Wiley, 1990.

Cita MLA (9th ed.)

Graham, Ronald L. Ramsey Theory. 2an ed. Wiley, 1990.