Gaya APA

ACKERMANN, W, W, G, W, E. (1973). Man made lakes: Their problems and environmental effects . : American Geophysical Union.

Gaya MLA

ACKERMANN, W.C.;, WHITE,, G.F.;, WORTHINGTON,, E.B.. "Man made lakes: Their problems and environmental effects". : American Geophysical Union, 1973. Buku.