National Research Council (U.S.). Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program, Coxhead, I. A., & Buenavista, G. (2001). Seeking sustainability: Challenges of agricultural development and environmental management in a Philippine watershed. Philippine Council for Agriculture, Forestry and Natural Resources Research Development.

National Research Council (U.S.). Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program, Ian A. Coxhead, and Gladys Buenavista. Seeking Sustainability: Challenges of Agricultural Development and Environmental Management in a Philippine Watershed. Los Banos, Laguna: Philippine Council for Agriculture, Forestry and Natural Resources Research Development, 2001.

National Research Council (U.S.). Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program, et al. Seeking Sustainability: Challenges of Agricultural Development and Environmental Management in a Philippine Watershed. Philippine Council for Agriculture, Forestry and Natural Resources Research Development, 2001.