Παραπομπή APA

Montgomery, C. W. (1989). Environmental geology/2nd ed (2nd ed.). WMC Brown.

Παραπομπή Chicago Style

Montgomery, Carla W. Environmental Geology/2nd Ed. 2nd ed. USA: WMC Brown, 1989.

Παραπομπή MLA

Montgomery, Carla W. Environmental Geology/2nd Ed. 2nd ed. WMC Brown, 1989.