Παραπομπή APA

Coates, D. R. (1973). Environmental geomorphology and landscape conservation: :v.3. Dowden.

Παραπομπή Chicago Style

Coates, Donald R. Environmental Geomorphology and Landscape Conservation: :v.3. Pennsylvania: Dowden, 1973.

Παραπομπή MLA

Coates, Donald R. Environmental Geomorphology and Landscape Conservation: :v.3. Dowden, 1973.