Environment and Resource Management Project & Guy, P. (1995). Agroecosystem analysis and rapid rural appraisal of selected sites in the Central Cordillera, Ifugao, Philippines. ERMP, Institute of Environmental Science and Management, College of Arts and Sciences, University of the Philippines at Los Banos.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Environment and Resource Management Project و Peter Guy. Agroecosystem Analysis and Rapid Rural Appraisal of Selected Sites in the Central Cordillera, Ifugao, Philippines. College, Laguna: ERMP, Institute of Environmental Science and Management, College of Arts and Sciences, University of the Philippines at Los Banos, 1995.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Environment and Resource Management Project و Peter Guy. Agroecosystem Analysis and Rapid Rural Appraisal of Selected Sites in the Central Cordillera, Ifugao, Philippines. ERMP, Institute of Environmental Science and Management, College of Arts and Sciences, University of the Philippines at Los Banos, 1995.