Ibrahim Abu Bakar. (1992). Ciri-ciri usahawan Islam. JPM.
Chicago Style (17th ed.) CitationIbrahim Abu Bakar. Ciri-ciri Usahawan Islam. Kuala Lumpur: JPM, 1992.
MLA (8th ed.) CitationIbrahim Abu Bakar. Ciri-ciri Usahawan Islam. JPM, 1992.
Warning: These citations may not always be 100% accurate.