Valiente, A. M. (1981). Costs involved in the production of agri-based import substitutes: Soybeans, Southern Mindanao. Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture.
Lua i Stíl Chicago (17ú heag.)Valiente, A. M. Costs Involved in the Production of Agri-based Import Substitutes: Soybeans, Southern Mindanao. Quezon City: Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture, 1981.
Lua MLA (9ú heag.)Valiente, A. M. Costs Involved in the Production of Agri-based Import Substitutes: Soybeans, Southern Mindanao. Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture, 1981.
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