APA Edition Citation

Hardin,Garrett. (1968). 39 Steps to Biology. W.H Freeman and Company.

Chicago Edition Citation

Hardin,Garrett. 39 Steps to Biology. London: W.H Freeman and Company, 1968.

MLA Edition Citation

Hardin,Garrett. 39 Steps to Biology. W.H Freeman and Company, 1968.

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