Gaya APA

Sagala, P. (2014). Payment for environmental services for water sustainability in merauke, Papua - Indonesia. ( Tesis 2014 ) . Yogyakarta: UGM.

Gaya MLA

Sagala, Parihutan. "Payment for environmental services for water sustainability in merauke, Papua - Indonesia. ( Tesis 2014 )". Yogyakarta: UGM, 2014. Text.