APA Citation

Hardin, G. (1968). 39 Steps to Biology. San Francisco: W. H. Freeman.

Chicago Style Citation

Hardin, Garrett. 39 Steps to Biology. San Francisco: W. H. Freeman, 1968.

MLA Citation

Hardin, Garrett. 39 Steps to Biology. San Francisco: W. H. Freeman, 1968.

Warning: These citations may not always be 100% accurate.