Cita APA (7th ed.)

Klopfer, P. H. (1973). Behavioral aspects of ecology (2a. ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Klopfer, Peter H. Behavioral Aspects of Ecology. 2a. ed. Englewood Cliffs: Prentice-Hall, 1973.

Cita MLA (9th ed.)

Klopfer, Peter H. Behavioral Aspects of Ecology. 2a. ed. Prentice-Hall, 1973.