Παραπομπή σε μορφή APA (7η εκδ.)

Smith, G. A., & Pun, A. (2006). How does Earth work?: Physical geology and the process of science. Pearson Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Smith, Gary A., και Aurora Pun. How Does Earth Work?: Physical Geology and the Process of Science. Upper Saddle River, N.J.: Pearson Prentice Hall, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Smith, Gary A., και Aurora Pun. How Does Earth Work?: Physical Geology and the Process of Science. Pearson Prentice Hall, 2006.