APA ציטוט

Smith, G. A., & Pun, A. (2006). How does earth work?: Physical geology and the process of science. Upper Saddle River, NJ: Pearson/Prentice Hall.

Trích dẫn kiểu Chicago

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

ציטוט MLA

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