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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program, Ian A. Coxhead, و 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.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)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.