Park, William R.
How to succeed in your own business
John Wiley & Sons, 1978
 Buku Teks
Elliot, Rose
Kitchen pharmacy : how to make your own remedies
Chapmans Publisher Ltd., 1994
 Buku Referensi
Minrath, William R.
How to run your own business and make it pay
D. Van Nostrand, 1956
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Greene, Gardiner G.
How to start and manage your own business
McGraw-Hill, 1975
 Buku Teks
Adams, Charles K.
How to your own working microcomputers / Charles K. Adams
Tab Books, 1980
 Buku Teks