Gaya APA

KAMRI, T. et al (2017). Willingness to pay for conservation of natural resources in Santubong National Park . Surabaya: Fak. Ekonomi, Universitas Kristen Petra.

Gaya MLA

KAMRI, Thalany. et al. "Willingness to pay for conservation of natural resources in Santubong National Park". Surabaya: Fak. Ekonomi, Universitas Kristen Petra, 2017. Artikel.