Tohutoro APA (7th ed.)

Kehew, A. E. (2006). Geology for engineers and environmental scientists (3a. ed.). Pearson Education Inc.

Tohutoru Kātū Chicago (17th ed.)

Kehew, Alan E. Geology for Engineers and Environmental Scientists. 3a. ed. Upper Saddle River: Pearson Education Inc, 2006.

Tohutoro MLA (9th ed.)

Kehew, Alan E. Geology for Engineers and Environmental Scientists. 3a. ed. Pearson Education Inc, 2006.