Gaya APA
HARDJASOEMANTRI, K. (1994).
Environmental legislation in Indonesia (3rd ed.).
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
HARDJASOEMANTRI, Koesnadi.
"Environmental legislation in Indonesia".
3rd ed.
Yogyakarta:
Gadjah Mada University Press,
1994.
Buku.