APA-referens (7:e uppl.)

Cruz, R. (1997). Watershed management and food security in the Philippines: Policy issues and concerns. Center for Policy and Development Studies, University of the Philippines at Los Baños.

Chicago-referens (17:e uppl.)

Cruz, R.V.O. Watershed Management and Food Security in the Philippines: Policy Issues and Concerns. College, Laguna: Center for Policy and Development Studies, University of the Philippines at Los Baños, 1997.

MLA-referens (9:e uppl.)

Cruz, R.V.O. Watershed Management and Food Security in the Philippines: Policy Issues and Concerns. Center for Policy and Development Studies, University of the Philippines at Los Baños, 1997.