, V., & , D. L. D. S. (2009). Mineral potential mapping using GIS in the Ponorogo, Pacitan, Tulungagung and Madiun quadrangle areas East Java Indonesia. [Yogyakarta] : Universitas Gadjah Mada.
Chicago Style Citation, VONGPHUTHONE, and Dr. Lucas Donny Setijadji. Mineral Potential Mapping Using GIS in the Ponorogo, Pacitan, Tulungagung and Madiun Quadrangle Areas East Java Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 2009.
MLA引文, VONGPHUTHONE, and Dr. Lucas Donny Setijadji. Mineral Potential Mapping Using GIS in the Ponorogo, Pacitan, Tulungagung and Madiun Quadrangle Areas East Java Indonesia. [Yogyakarta] : Universitas Gadjah Mada, 2009.
警告：這些引文格式不一定是100％准確.