Philippine Council for Agriculture, Forestry and Natural Resources Reseach and Development. (1991). Management and utilization of acid soils. PCARRD, Bureau of Soils and Water Management, Rainfed Resources Development Project.
Cita Chicago (17th ed.)Philippine Council for Agriculture, Forestry and Natural Resources Reseach and Development. Management and Utilization of Acid Soils. Los Banos, Laguna: PCARRD, Bureau of Soils and Water Management, Rainfed Resources Development Project, 1991.
Cita MLA (9th ed.)Philippine Council for Agriculture, Forestry and Natural Resources Reseach and Development. Management and Utilization of Acid Soils. PCARRD, Bureau of Soils and Water Management, Rainfed Resources Development Project, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.