Wallace, R. F. (1952). Economic aspects of wildlife resources in the State of Washington. State College of Washington, School of Economics and Business, Bureau of Economic and Business Research.
Chicago-referens (17:e uppl.)Wallace, Robert F. Economic Aspects of Wildlife Resources in the State of Washington. Pullman: State College of Washington, School of Economics and Business, Bureau of Economic and Business Research, 1952.
MLA-referens (8:e uppl.)Wallace, Robert F. Economic Aspects of Wildlife Resources in the State of Washington. State College of Washington, School of Economics and Business, Bureau of Economic and Business Research, 1952.
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