Cita APA

Small, R. J., & Small, R. J. (1978). The study of landforms: A textbook of geomorphology (2. edition --.). Cambridge, Mass.: Cambridge University Press.

Citación estilo Chicago

Small, Ronald John, y Ronald John Small. The Study of Landforms: A Textbook of Geomorphology. 2. edition --. Cambridge, Mass.: Cambridge University Press, 1978.

Cita MLA

Small, Ronald John, y Ronald John Small. The Study of Landforms: A Textbook of Geomorphology. 2. edition --. Cambridge, Mass.: Cambridge University Press, 1978.