, S.. (2005). LANDFORM CONTROLS IN SOIL CONFIGURATION AT KARANGMOJO â?? PONJONG, GUNUNGKIDUL, YOGYAKARTA. [Yogyakarta] : HAGI-IAGI-PERHAPI.
استشهاد بنمط شيكاغو, Srijono. LANDFORM CONTROLS IN SOIL CONFIGURATION AT KARANGMOJO â?? PONJONG, GUNUNGKIDUL, YOGYAKARTA. [Yogyakarta] : HAGI-IAGI-PERHAPI, 2005.
MLA استشهاد, Srijono. LANDFORM CONTROLS IN SOIL CONFIGURATION AT KARANGMOJO â?? PONJONG, GUNUNGKIDUL, YOGYAKARTA. [Yogyakarta] : HAGI-IAGI-PERHAPI, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.