APA (7th ed.) Citation

Rischer, C. E., & Easton, T. A. (1995). Focus on human biology (2nd ed.). Harper Collins.

Chicago Style (17th ed.) Citation

Rischer, Carl E., and Thomas A. Easton. Focus on Human Biology. 2nd ed. New York, NY: Harper Collins, 1995.

MLA (9th ed.) Citation

Rischer, Carl E., and Thomas A. Easton. Focus on Human Biology. 2nd ed. Harper Collins, 1995.