Cita APA (7a ed.)

Douglas, I., & Spencer, T. (1982). Applied geomorphology in the tropics. Borntraeger.

Cita Chicago Style (17a ed.)

Douglas, Ian, y T. Spencer. Applied Geomorphology in the Tropics. Berlin: Borntraeger, 1982.

Cita MLA (8a ed.)

Douglas, Ian, y T. Spencer. Applied Geomorphology in the Tropics. Borntraeger, 1982.