Παραπομπή APA

Montgomery, C. W. (2006). Environmetal geology (7th ed.). McGraw Hill.

Παραπομπή Chicago Style

Montgomery, Carla W. Environmetal Geology. 7th ed. Boston: McGraw Hill, 2006.

Παραπομπή MLA

Montgomery, Carla W. Environmetal Geology. 7th ed. McGraw Hill, 2006.