(1989). Manual of instructions: Meteorological and phenological observations in agriculture and forestry. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, Department of Science and Technology.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Manual of Instructions: Meteorological and Phenological Observations in Agriculture and Forestry. Los Banos, Laguna: Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, Department of Science and Technology, 1989.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Manual of Instructions: Meteorological and Phenological Observations in Agriculture and Forestry. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, Department of Science and Technology, 1989.