Gaya APA

Widodo, W, D. (2014). (E) Sistem Pertanian: Dasar-Dasar Budi Daya Tanaman . Jakarta: .

Gaya MLA

Widodo, Winarso, Drajad. "(E) Sistem Pertanian: Dasar-Dasar Budi Daya Tanaman". Jakarta: , 2014. Electronic Resource.