Okita, Saburo
Institute for domestic and International Policy Studies, 1992
Buku Teks
Layton, Irving
McClelland and Stewart, 1978
Buku Teks
Pudentia Maria Purenti Sri Suniarti Karnadi
Faculty of Humanities University of Indonesia, 2010
Artikel Jurnal
Thorne, Matt
Faber and Faber, 2013
Buku Teks
Machiavelli, Niccolo
J.M. Dent & Sons, 1952
Buku Teks SO