Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. Research Information Storage and Retrieval System Committee. (1989). RETRES technical abstracting manual. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.
Chicago Style (17. basım) AtıfPhilippine Council for Agriculture, Forestry and Natural Resources Research and Development. Research Information Storage and Retrieval System Committee. RETRES Technical Abstracting Manual. Los Banos, Laguna: Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1989.
MLA (9th ed.) AtıfPhilippine Council for Agriculture, Forestry and Natural Resources Research and Development. Research Information Storage and Retrieval System Committee. RETRES Technical Abstracting Manual. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1989.