Perpustakaan UGM, i. (1988). Geomorphological approach to surficial material evaluation in the Serang River Basin Kulonprogo, Yogyakarta, Indonesia. [Yogyakarta] : Universitas Gadjah Mada.
استشهاد بنمط شيكاغوPerpustakaan UGM, i-lib. Geomorphological Approach to Surficial Material Evaluation in the Serang River Basin Kulonprogo, Yogyakarta, Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 1988.
MLA استشهادPerpustakaan UGM, i-lib. Geomorphological Approach to Surficial Material Evaluation in the Serang River Basin Kulonprogo, Yogyakarta, Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.