, H., & , D. H. H. (2007). Groundwater modeling in Yogyakarta urban area, Indonesia. [Yogyakarta] : Universitas Gadjah Mada.
Chicago Style Citation, HUYEN, and Dr.Ir. Heru Hendrayana. Groundwater Modeling in Yogyakarta Urban Area, Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 2007.
MLA引文, HUYEN, and Dr.Ir. Heru Hendrayana. Groundwater Modeling in Yogyakarta Urban Area, Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 2007.
警告：這些引文格式不一定是100％准確.