Παραπομπή APA

Beaver, S., & Derbyshire, E. (1974). Structural geomorphology. Longman.

Παραπομπή Chicago Style

Beaver, S.H, και E. Derbyshire. Structural Geomorphology. London: Longman, 1974.

Παραπομπή MLA

Beaver, S.H, και E. Derbyshire. Structural Geomorphology. Longman, 1974.