APA ציטוט

Petersen, M. S. (1990). Interpreting earth history: Manual in historical geology (4th ed.). WCBrown.

Chicago Style (17th ed.) Citation

Petersen, Morris S. Interpreting Earth History: Manual in Historical Geology. 4th ed. Dubuque, IA: WCBrown, 1990.

ציטוט MLA

Petersen, Morris S. Interpreting Earth History: Manual in Historical Geology. 4th ed. WCBrown, 1990.