Gaya APA

Carlson, D, H., Plummer, C, C. (2009). Physical Geology: Earth Revealed (Ed.8). Boston: McGill Institute of Islamic Studies.

Gaya MLA

Carlson, Diane, H., Plummer, Charles, C. "Physical Geology: Earth Revealed". Ed.8 Boston: McGill Institute of Islamic Studies, 2009. Text.