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John Hopkins University Press, 1995
Buku Teks
by David S. Kidwell ... [and others]
John Wiley & Sons, 2013
Buku Teks
edited by Beth A. Simmons and Richard H. Steinberg
Cambridge University Press, 2006
Buku Teks
Siagian, A. Prabu S. M., author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
Arief Budiman, author
Universitas Indonesia, 2005
UI - Skripsi (Membership)