Claxton, john
Glorier business library : managing your personal finances
Glorier International, 1999
 Buku Referensi
Paulson, Edward
The complete ideal's guide starting your own business
Prenada Media, 2003
 Buku Teks
Hilliard, Brooks L.
Buying a computer for your growing business: an insider's guide
Dow Jones-Irwin , 1984
 Buku Teks SO
Monk, Keith
Go international : your guide to marketing and business development
McGraw-Hill, 1989
 Buku Teks SO
Lockett, David M.
Building your advertising business : a complete guide to boost your billings / David M. Lockett
NTC Business Books, 1989
 Buku Teks SO