APA (7th ed.) Citation

Kolenkow, R. J. (1974). Physical geography today: A portrait of a planet. CRM Books.

Chicago Style (17th ed.) Citation

Kolenkow, Robert J. Physical Geography Today: A Portrait of a Planet. Del Mar, Calif: CRM Books, 1974.

MLA (9th ed.) Citation

Kolenkow, Robert J. Physical Geography Today: A Portrait of a Planet. CRM Books, 1974.

Warning: These citations may not always be 100% accurate.