Gaya APA

Skinner, B, J., Porter, S, C. (1995). The Dynamic Earth An Introduction to Physical Geology Third Edition (E-Book) . New York: John Wiley & Sons, Inc..

Gaya MLA

Skinner, Brian, J., Porter, Stephen, C.. "The Dynamic Earth An Introduction to Physical Geology Third Edition (E-Book)". New York: John Wiley & Sons, Inc., 1995. Text.