Jefkins, Frank William, author
Erlangga, 1996
Buku Teks
Jefkins, Frank William, author
Erlangga, 1996
Buku Teks
Isyak Sabroni Stamboel, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1998
UI - Tesis (Membership)
Hill, Dennis Cole
Golden Books Centre , 1992
Buku Teks
Margaretha Nazhesda, author
2019
UI - Skripsi (Membership)