Gaya APA

Erickson, J. (2000). An Introduction to Fossils and Minerals: Seeking Clues to The Earth’s Past (Revised Edition). New York: Facts On File, Inc..

Gaya MLA

Erickson, Jon. "An Introduction to Fossils and Minerals: Seeking Clues to The Earth’s Past". Revised Edition New York: Facts On File, Inc., 2000. e-book.