एपीए उद्धरण

Gutfreund, H. (1981). Biochemical evolution. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Gutfreund, H. Biochemical Evolution. London: Cambridge University Press, 1981.

एमएलए उद्धरण

Gutfreund, H. Biochemical Evolution. Cambridge University Press, 1981.