APA Style
Poort, J, M. (1976).
Historical Geology Interpretations and Applications Second Edition (Ed.2, Cet.4).
Minneapolis:
Burgess Publishing Company.
MLA Style
Poort, Jon, M..
"Historical Geology Interpretations and Applications Second Edition".
Ed.2, Cet.4
Minneapolis:
Burgess Publishing Company,
1976.
Text.