Cruz, W. D. (1987). The environmental effects of soil erosion: Economic valuation issues for Philippine uplands. College of Economics and Management, University of the Philippines at Los Baños.
Style de citation Chicago (17e éd.)Cruz, Wilfrido D. The Environmental Effects of Soil Erosion: Economic Valuation Issues for Philippine Uplands. College, Laguna: College of Economics and Management, University of the Philippines at Los Baños, 1987.
Style de citation MLA (9e éd.)Cruz, Wilfrido D. The Environmental Effects of Soil Erosion: Economic Valuation Issues for Philippine Uplands. College of Economics and Management, University of the Philippines at Los Baños, 1987.
Attention : ces citations peuvent ne pas être correctes à 100%.