Gaya APA

Driessen, P, M., Soepraptohardjo, M. (1974). Soils for Agricultural Expansion in Indonesia (Cet. 1.--). Bogor: Soil Research Institute.

Gaya MLA

Driessen, P., M.., Soepraptohardjo, M.. "Soils for Agricultural Expansion in Indonesia". Cet. 1.-- Bogor: Soil Research Institute, 1974. Text.