Cita APA (7th ed.)

CHORLEY, R. J., SCHUMM, S. A., & SUGDEN, D. E. (1984). Geomorphology. Methuen.

Cita Chicago (17th ed.)

CHORLEY, Richard J., Stanley A. SCHUMM, i David E. SUGDEN. Geomorphology. London: Methuen, 1984.

Cita MLA (9th ed.)

CHORLEY, Richard J., et al. Geomorphology. Methuen, 1984.