edited by Mary Emanoil
Gale Research Inc., 1994
Buku Referensi
Della Rizky Marsa Velesnika
Fakultas Hukum Universitas Indonesia, 2016
UI - Tesis Membership
Leigh, John
National Park and Wildlife Service, 1979
Buku Teks
disusun oleh Syahrial Anhar Harahap
Departemen Kehutanan , 2008
Buku Teks
Ken Swari Maharani
Fakultas Hukum Universitas Indonesia, 2014
UI - Tesis Membership