Hengki Purwowidagdo, author
Fakultas Hukum Universitas Indonesia, 1992
UI - Skripsi (Membership)
Eko Prasojo, author
FISIP UI, 2010
Artikel Jurnal
Jeremy Jordan, author
2018
UI - Skripsi (Membership)
Rao V. Kolluru, editor in chief
McGraw-Hill, 1994
Buku Referensi
Keppy, Peter, author
KITLV Press, 2010
Buku Teks