edited by Donald Eugene Smith
Free Press, 1971
Buku Teks SO
Keohane, Robert Owen, 1941-, author
Longman, 2012
Buku Teks SO
Daillant, Georges
International Universities Bureau of the International Association of Universities, 1990
Buku Referensi
Beneit, Emile ed.
N.Y. Columbia University Press , 1967
Buku Teks SO
Pusat Pendidikan dan Studi Kebanksentralan, Bank Indonesia, 2003
Buku Teks