Cita APA (7a ed.)

Krohne, D. T. (2001). General ecology (2nd ed.). Brooks/Cole/Thomson Learning.

Cita Chicago Style (17a ed.)

Krohne, David T. General Ecology. 2nd ed. Pacific Grove, CA: Brooks/Cole/Thomson Learning, 2001.

Cita MLA (8a ed.)

Krohne, David T. General Ecology. 2nd ed. Brooks/Cole/Thomson Learning, 2001.