Cita APA

Wagner, P. L. 1., & Wagner, P. L. 1. (1972). Environments and peoples. Englewood Cliffs, N.J.: Prentice Hall.

Citación estilo Chicago

Wagner, Philip Lawrence 1921-, y Philip Lawrence 1921- Wagner. Environments and Peoples. Englewood Cliffs, N.J.: Prentice Hall, 1972.

Cita MLA

Wagner, Philip Lawrence 1921-, y Philip Lawrence 1921- Wagner. Environments and Peoples. Englewood Cliffs, N.J.: Prentice Hall, 1972.