Gaya APA

Hafsaridewi, R. et al (2009). Biodisel from low grade used frying oil using esterification transesterification process (Vol. 13, No. 02, Tahun). : American foundations information service.

Gaya MLA

Hafsaridewi, Rani. et al. "Biodisel from low grade used frying oil using esterification transesterification process". Vol. 13, No. 02, Tahun : American foundations information service, 2009. Text.