Berman, Harold J., author
Tatanusa, 1996
Buku Teks
Berman, Harold J., author
Tatanusa, 2008
Buku Teks
Masri Maris, translator; Pelaksana George Clack, Rosalie Targonski, Mildred Sola Neely, editor
Departemen Luar Negri AS, 2001
Buku Teks
Prita Purwanto, author
2015
UI - Skripsi Membership
Stella Cindamora, author
Universitas Indonesia, 2017
UI - Skripsi Membership