APA-Zitierstil (7. Ausg.)

Petersen, M. S. (1980). Historical geology of North America (2nd ed.). W. C. Brown Co.

Chicago-Zitierstil (17. Ausg.)

Petersen, Morris S. Historical Geology of North America. 2nd ed. Dubuque, Iowa: W. C. Brown Co, 1980.

MLA-Zitierstil (9. Ausg.)

Petersen, Morris S. Historical Geology of North America. 2nd ed. W. C. Brown Co, 1980.