McKenzie, G. D., & Utgard, R. O. Man and his physical environment: Readings in environmental geology.
Цитирование в стиле Чикаго (17-е изд.)McKenzie, Garry D., и Russell O. Utgard. Man and His Physical Environment: Readings in Environmental Geology.
Цитирование MLA (9-е изд.)McKenzie, Garry D., и Russell O. Utgard. Man and His Physical Environment: Readings in Environmental Geology.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.