Gaya APA
Journal of Environmental Economics and Management(2017).. (2017).
New York:
ELSEVIER.
Gaya Chicago
Journal of Environmental Economics and Management(2017)..
2017.
New York:
ELSEVIER,
2017.
JURNAL (TERCETAK).
Gaya MLA
Journal of Environmental Economics and Management(2017)..
2017.
New York:
ELSEVIER,
2017.
JURNAL (TERCETAK).
Gaya Turabian
Journal of Environmental Economics and Management(2017)..
New York:
ELSEVIER,
2017.
JURNAL (TERCETAK).