Partha Pratim Basu, Ipshita Chanda, editor
Sage, 2011
Buku Teks
Dossani, Rafiq, author
American Management Association, 2008
eBooks
Murphy, Gardner, author
Basic Books, Inc., 1953
Buku Teks
England, George W.
Kent State University Press , 1974
Buku Teks
Dange, Sindhu S.
A anta Publications, 1984
Buku Teks