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.
Cytowanie według stylu Chicago (wyd. 17)International Development Research Center (Singapore) i 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.
Cytowanie według stylu MLA (wyd. 9)International Development Research Center (Singapore) i 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.