McKenzie, G. D., & Utgard, R. O. Man and his physical environment: Readings in environmental geology.
Chicago-Zitierstil (17. Ausg.)McKenzie, Garry D., und Russell O. Utgard. Man and His Physical Environment: Readings in Environmental Geology.
MLA-Zitierstil (9. Ausg.)McKenzie, Garry D., und Russell O. Utgard. Man and His Physical Environment: Readings in Environmental Geology.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.