Cita APA (7th ed.)

Enger, E. D. (2014). Concepts in biology (14th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Enger, Eldon D. Concepts in Biology. 14th ed. New York, NY: McGraw-Hill, 2014.

Cita MLA (9th ed.)

Enger, Eldon D. Concepts in Biology. 14th ed. McGraw-Hill, 2014.