APA
United Nations Conference on Trade and Development, .Guideline on national Requirements for The Qualification of Professional Accountants. New York : United Nations, 1999: .
Chicago
United Nations Conference on Trade and Development, .Guideline on national Requirements for The Qualification of Professional Accountants. New York : United Nations, 1999: .
Harvard
United Nations Conference on Trade and Development, .Guideline on national Requirements for The Qualification of Professional Accountants. New York : United Nations, 1999: .
MLA
United Nations Conference on Trade and Development, .New York : United Nations, 1999: . .