Rostis, Adam, author
Emerald, 2016
eBooks
edited by Mayer N. Zald
Quadrangle Books, 1967
Buku Teks
Burghardt, Steve
Sage Publications, 1982
Buku Teks
Jossey-Bass Inc., Publishers, 1990
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Chowdhury, G.G., author
Facet Publishing, 2007
Buku Teks