International Development Research Center (Singapore) & Economy and Environment Program for Southeast Asia. (2008). Willingness to pay for the conservation of endangered species in four Asian countries. Economy and Environment Program for Southeast Asia.
Chicagoスタイル(17版)引用形式International Development Research Center (Singapore) , Economy and Environment Program for Southeast Asia. Willingness to Pay for the Conservation of Endangered Species in Four Asian Countries. Singapore: Economy and Environment Program for Southeast Asia, 2008.
MLA(9版)引用形式International Development Research Center (Singapore) , Economy and Environment Program for Southeast Asia. Willingness to Pay for the Conservation of Endangered Species in Four Asian Countries. Economy and Environment Program for Southeast Asia, 2008.