APA (7th ed.) Citation

UGM, A. f. p. (1981). Sistem pertanian hemat energi. UGM.

Chicago Style (17th ed.) Citation

UGM, Alumni fakultas pertanian. Sistem Pertanian Hemat Energi. UGM, 1981.

MLA (8th ed.) Citation

UGM, Alumni fakultas pertanian. Sistem Pertanian Hemat Energi. UGM, 1981.

Warning: These citations may not always be 100% accurate.