Profit testing
Universitas Indonesia, 1998
UI - Skripsi (Membership)
Sugars, Bradley J.
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
Wolf, Thomas
Managing a non profit organization
A fireside Book, 1990
Buku Teks