APA (7th ed.) Citation

Sparks, B. W. (1979). Geomorphology (2. ed., 6. impr.). Longman.

Chicago Style (17th ed.) Citation

Sparks, Bruce W. Geomorphology. 2. ed., 6. impr. London: Longman, 1979.

MLA (9th ed.) Citation

Sparks, Bruce W. Geomorphology. 2. ed., 6. impr. Longman, 1979.