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Buku Teks
Mayer, Robert R., author
Prentince-Hall, 1980
Buku Teks
Stein, Theodore J., author
Columbia University Press, 2001
Buku Teks
edited by Peter Dwyer, Sandra M I Shaw
Sage, 2013
Buku Teks
Cambridge University Press, 2018
Majalah, Jurnal, Buletin