Davis, Jerry C., author
Rehabbing for profit
McGraw-Hill, 1981
 Buku Teks
Profit testing
Universitas Indonesia, 1998
 UI - Skripsi (Membership)
Sugars, Bradley J., author
Instant profit
McGraw-Hill, 2006
 Buku Teks
Foster, Douglas
Managing for profit / Douglas Foster
Longman, 1972
 Buku Teks
Brown, Harriete J
Hand weaving for pleasure and profit
Harper & Brothers Published, 1952
 Buku Teks
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