Colleen G. Le Prell, Donald Henderson, Richard R. Fay, Arthur N. Popper, editors
Springer, 2012
eBooks
Watson, Patty Jo
Columbia University Press , ss 1971
Buku Teks
A.A. Tuen ... [and others]
UNDP/GEF, 2006
Buku Teks
Farel Akbar Nugraha Putra
Fakultas Hukum Universitas Indonesia, 2022
UI - Skripsi Membership
Reynolds, Charles
Martin Robertson, 1973
Buku Teks