Gaya APA

Strahler, A, H, &, S, A, N. (1973). Environmental GeoScience : Interaction Between Natural Systems and Man . Canada: John Wiley & Sons Ltd..

Gaya MLA

Strahler, Alan, H., &, Strahler,, Arthur, N.. "Environmental GeoScience : Interaction Between Natural Systems and Man". Canada: John Wiley & Sons Ltd., 1973. Text.