Meyer, P. A. (1975). A comparison of direct questioning methods for obtaining dollar values for public recreation and preservation. Environment Canada, Fisheries and Marine Service.
Citação do estilo Chicago (17ª ed.)Meyer, Philip A. A Comparison of Direct Questioning Methods for Obtaining Dollar Values for Public Recreation and Preservation. Vancouver?: Environment Canada, Fisheries and Marine Service, 1975.
Citação MLA (8ª ed.)Meyer, Philip A. A Comparison of Direct Questioning Methods for Obtaining Dollar Values for Public Recreation and Preservation. Environment Canada, Fisheries and Marine Service, 1975.
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