APA (7th ed.) Citation

Wolfe, C. W. (1950). This earth of ours: Past and present. Earth Science Pub. Co..

Chicago Style (17th ed.) Citation

Wolfe, Caleb Wroe. This Earth of Ours: Past and Present. Revere, Mass.: Earth Science Pub. Co., 1950.

MLA (9th ed.) Citation

Wolfe, Caleb Wroe. This Earth of Ours: Past and Present. Earth Science Pub. Co., 1950.

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