APA (7th ed.) Citation

Poort, J. M. (1980). Historical geology: Interpretations and applications (3rd ed.). Macmillan ; Collier Macmillan.

Chicago Style (17th ed.) Citation

Poort, Jon M. Historical Geology: Interpretations and Applications. 3rd ed. New York : London: Macmillan ; Collier Macmillan, 1980.

MLA (9th ed.) Citation

Poort, Jon M. Historical Geology: Interpretations and Applications. 3rd ed. Macmillan ; Collier Macmillan, 1980.