Gaya APA
SETIYANI, A, D. et al (2017).
Economic valuation water supply from Merapi Volcano National Park .
Bogor:
IPB.
Gaya MLA
SETIYANI, Ayu, Diyah. et al.
"Economic valuation water supply from Merapi Volcano National Park".
Bogor:
IPB,
2017.
Artikel.