Gaya APA

Lestyaningrum, N, U. (2009). Market preference toward green tourism product and pro poor tourism product : Study at Daerah Istimewa Yogyakarta . Yogyakarta: Graduate School Gadjah Mada University.

Gaya MLA

Lestyaningrum, Niken, Untari. "Market preference toward green tourism product and pro poor tourism product : Study at Daerah Istimewa Yogyakarta". Yogyakarta: Graduate School Gadjah Mada University, 2009. BUKU.