, I., & , P. D. I. S. P. (2009). Valuasi ekonomi Taman Nasional Way Kambas Lampung: : An Application of The Individual Travel Cost Method. [Yogyakarta] : Universitas Gadjah Mada.
Chicago Style Citation, ISWANDI, and Prof Dr. Iswardono S. Permono. Valuasi Ekonomi Taman Nasional Way Kambas Lampung: : An Application of The Individual Travel Cost Method. [Yogyakarta] : Universitas Gadjah Mada, 2009.
MLA引文, ISWANDI, and Prof Dr. Iswardono S. Permono. Valuasi Ekonomi Taman Nasional Way Kambas Lampung: : An Application of The Individual Travel Cost Method. [Yogyakarta] : Universitas Gadjah Mada, 2009.
警告：這些引文格式不一定是100％准確.