APA (7th ed.) Citation

(1960). The earth as a planet (3. impr.). Univ. of Chicago Pr.

Chicago Style (17th ed.) Citation

The Earth as a Planet. 3. impr. Chicago, Ill: Univ. of Chicago Pr, 1960.

MLA (9th ed.) Citation

The Earth as a Planet. 3. impr. Univ. of Chicago Pr, 1960.

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