Lakos, Amos
International negotiations: a bibliography
Westview Press, 1989
 Buku Referensi
Cellich, Claude
Practical solutions to global business negotiations
Business Expert Press, 2012
 Buku Teks
Successful small business management
by Curtis E. Tate Jr. ... [and others]
Business Publication, 1982
 Buku Teks
Dersal, William R. Van
The Successful supervisor in government and business
Harper & Brother, 1962
 Buku Teks
Forsyth, Patrick
The art of successful business communication
Institution of Engineering and Technology, 2008
 eBooks