APA (7th ed.) Citation

Wright, G. F. (1920). The ice age in North America and its bearings upon the antiquity of man (6., enlarged ed.). Bibliotheca Sacra.

Chicago Style (17th ed.) Citation

Wright, George F. The Ice Age in North America and Its Bearings upon the Antiquity of Man. 6., enlarged ed. Oberlin, Ohio: Bibliotheca Sacra, 1920.

MLA (9th ed.) Citation

Wright, George F. The Ice Age in North America and Its Bearings upon the Antiquity of Man. 6., enlarged ed. Bibliotheca Sacra, 1920.