Boella, M. J.
Barrie and Jenkins , 1974
Buku Teks
Metzger, Norman
Spectrum Publication, 1975
Buku Teks
Koestenbaum, Peter
Jossey-Bass Publishers, 1991
Buku Teks
Burns, James McGregor
Harper and Row, 1978
Buku Teks
Wawan Kurniawan
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2010
UI - Tesis Open