Gaya APA
Hardjasoemantri, K. (1994).
Environmental Legislation In Indonesia ; Third Edition .
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Hardjasoemantri, Koesnadi.
"Environmental Legislation In Indonesia ; Third Edition".
Yogyakarta:
Gadjah Mada University Press,
1994.
Text.