APA (7th ed.) Citation

Krough, D. (2011). Biology: A guide natural world (5th ed.). Benjamin Cummings.

Chicago Style (17th ed.) Citation

Krough, David. Biology: A Guide Natural World. 5th ed. Boston, Massachusetts: Benjamin Cummings, 2011.

MLA (9th ed.) Citation

Krough, David. Biology: A Guide Natural World. 5th ed. Benjamin Cummings, 2011.

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