Apolinario, C. (1975). Farm management studies in Cagayan Valley. Special Studies Division, Dept. of Agriculture.
Citace podle Chicago (17th ed.)Apolinario, C.H. Farm Management Studies in Cagayan Valley. Quezon City: Special Studies Division, Dept. of Agriculture, 1975.
Citace podle MLA (9th ed.)Apolinario, C.H. Farm Management Studies in Cagayan Valley. Special Studies Division, Dept. of Agriculture, 1975.
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