Perpustakaan UGM, i. (2004). Studi komparatif usahatani kopi robusta=A Comparative Study on Organic with Non Organic Robusta Coffee in Samigaluh Subdistrict ofKulon Progo Regency. [Yogyakarta] : Universitas Gadjah Mada.
استشهاد بنمط شيكاغوPerpustakaan UGM, i-lib. Studi Komparatif Usahatani Kopi Robusta=A Comparative Study On Organic With Non Organic Robusta Coffee in Samigaluh Subdistrict OfKulon Progo Regency. [Yogyakarta] : Universitas Gadjah Mada, 2004.
MLA استشهادPerpustakaan UGM, i-lib. Studi Komparatif Usahatani Kopi Robusta=A Comparative Study On Organic With Non Organic Robusta Coffee in Samigaluh Subdistrict OfKulon Progo Regency. [Yogyakarta] : Universitas Gadjah Mada, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.