APA citiranje

Hardin, G. (1968). 39 steps to biology: Readings from Scientific American. W. H. Freeman.

Chicago Style (17th ed.) Citation

Hardin, Garrett. 39 Steps to Biology: Readings from Scientific American. San Francisco: W. H. Freeman, 1968.

MLA citiranje

Hardin, Garrett. 39 Steps to Biology: Readings from Scientific American. W. H. Freeman, 1968.