APA (7th ed.) Citation

Poort, J. M. (1976). Historical geology: Interpretations and applications (2d ed.). Burgess.

Chicago Style (17th ed.) Citation

Poort, John M. Historical Geology: Interpretations and Applications. 2d ed. Minneapolis: Burgess, 1976.

MLA (8th ed.) Citation

Poort, John M. Historical Geology: Interpretations and Applications. 2d ed. Burgess, 1976.

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