Gaya APA

Shafeer, M, M, H, E, R, B, ;, L, R. (2003). Achieving Sustainable Freshwater Systems : A Web of connections . New York: McGraw-Hill.

Gaya MLA

Shafeer, Marjorrie, M., Holland,, Elizabeth, R., Blood, ;, Lawrence, R.. "Achieving Sustainable Freshwater Systems : A Web of connections". New York: McGraw-Hill, 2003. Text.