APA استشهاد

Small, R. J. (1970). Study of landforms: : A Textbook of geomorphology. Cambridge University Press.

استشهاد بنمط شيكاغو

Small, R. J. Study of Landforms: : A Textbook of Geomorphology. London: Cambridge University Press, 1970.

MLA استشهاد

Small, R. J. Study of Landforms: : A Textbook of Geomorphology. Cambridge University Press, 1970.