Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. (1992). Directory of research and development projects in agriculture, forestry and natural resources in the Philippines: Program year 1992 on-going and completed by commodity. Management Information Services Division, PCARRD.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. Directory of Research and Development Projects in Agriculture, Forestry and Natural Resources in the Philippines: Program Year 1992 On-going and Completed by Commodity. Los Banos, Laguna: Management Information Services Division, PCARRD, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. Directory of Research and Development Projects in Agriculture, Forestry and Natural Resources in the Philippines: Program Year 1992 On-going and Completed by Commodity. Management Information Services Division, PCARRD, 1992.