APA (7th ed.) Citation

Riordan, J. (1958). An introduction to combinatorial analysis. Chapman and Hall, Limited.

Chicago Style (17th ed.) Citation

Riordan, John. An Introduction to Combinatorial Analysis. New York: Chapman and Hall, Limited, 1958.

MLA (9th ed.) Citation

Riordan, John. An Introduction to Combinatorial Analysis. Chapman and Hall, Limited, 1958.