Lipschutz, Ronnie D.
Routledge, Taylor & Francis Group, 2006
Buku Teks SO
edited by Jonathan Xavier Inda
Blackwell, 2005
eBooks
Lane, Jan-Erik
Ashgate, 2006
Buku Teks
Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
Buku Teks SO
Wiarda, Howard J.
Hartcourt College Publishers, 2001
Buku Teks SO