, G. H. (2009). Lapangan Gunung Api Tersier Daerah Berbah Sleman - Imogiri Bantul,Yogyakarta. [Yogyakarta] : Departemnts of Geological Engineering Faculty of E.
Chicago Style Citation, G. Hartono. Lapangan Gunung Api Tersier Daerah Berbah Sleman - Imogiri Bantul,Yogyakarta. [Yogyakarta] : Departemnts of Geological Engineering Faculty of E, 2009.
MLA引文, G. Hartono. Lapangan Gunung Api Tersier Daerah Berbah Sleman - Imogiri Bantul,Yogyakarta. [Yogyakarta] : Departemnts of Geological Engineering Faculty of E, 2009.
警告：這些引文格式不一定是100％准確.