Singh, U.K., author
International encyclopedia of professional management Vol. 4, Project management
New Delhi : Anmol Publications, 1998,
 Buku Referensi
Singh, U.K., author
International encyclopedia of professional management Vol. 6, financial management
New Delhi : Anmol Publications, 1998,
 Buku Referensi
Singh, U.K., author
International encyclopedia of professional management Vol. 5, export management
New Delhi : Anmol Publications, 1998,
 Buku Referensi
Singh, U.K., author
International encyclopedia of professional management Vol. 7, sales management
New Delhi : Anmol Publications, 1998,
 Buku Referensi
Condliffe, Peter, author
Conflict management: a practical guide
Lexis lexis, 2012
 Buku Teks
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