Cita APA (7a ed.)

Riordan, J. (1980). An Introduction to Combinatorial Analysis. Princeton University Press.

Cita Chicago Style (17a ed.)

Riordan, John. An Introduction to Combinatorial Analysis. Princeton, New Jersey: Princeton University Press, 1980.

Cita MLA (8a ed.)

Riordan, John. An Introduction to Combinatorial Analysis. Princeton University Press, 1980.