WIDODO, S. (1978). Indentifying Constraints In Higher Rice Yield In Yogyakarta - Indonesia Sri Widodo. UGM.
Čikaški stil citiranja (17. izdanje)WIDODO, SRI. Indentifying Constraints In Higher Rice Yield In Yogyakarta - Indonesia Sri Widodo. UGM, 1978.
MLA način citiranja (8. izdanje)WIDODO, SRI. Indentifying Constraints In Higher Rice Yield In Yogyakarta - Indonesia Sri Widodo. UGM, 1978.
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