Cita APA (7a ed.)

Waters, G. H. C. (1971). First lessons in physical geography (2. rev. ed., new impr.). Longman.

Cita Chicago Style (17a ed.)

Waters, Grahame Hugh Clement. First Lessons in Physical Geography. 2. rev. ed., new impr. London: Longman, 1971.

Cita MLA (9a ed.)

Waters, Grahame Hugh Clement. First Lessons in Physical Geography. 2. rev. ed., new impr. Longman, 1971.

Precaución: Estas citas no son 100% exactas.