Du Yaping. (1998). Economy and environment program for Southeast Asia: Application of Contingent Valuation and Travel Cost Methods,The value of water quality for recreation in East Lake, Wuhan, China. Singapore: EEPSEA.
Trích dẫn kiểu ChicagoDu Yaping. Economy and Environment Program for Southeast Asia: Application of Contingent Valuation and Travel Cost Methods,The Value of Water Quality for Recreation in East Lake, Wuhan, China. Singapore: EEPSEA, 1998.
MLA引文Du Yaping. Economy and Environment Program for Southeast Asia: Application of Contingent Valuation and Travel Cost Methods,The Value of Water Quality for Recreation in East Lake, Wuhan, China. Singapore: EEPSEA, 1998.
警告：這些引文格式不一定是100％准確.