एपीए उद्धरण

Berman, G., & Fryer, K. D. (1972). Introduction to Combinatorics. New York: Academic Press.

शिकागो स्टाइल उद्धरण

Berman, Gerald, और K. D. Fryer. Introduction to Combinatorics. New York: Academic Press, 1972.

एमएलए उद्धरण

Berman, Gerald, और K. D. Fryer. Introduction to Combinatorics. New York: Academic Press, 1972.