APA (7e ed.) Bronvermelding
Nigeria. Federal Inland Revenue Service, ebrary, Inc, & Okauru, I. O. (2012). FIRS handbook on reforms in the tax system (2004-2011). Safari Books.
Chicago (17e ed.) Bronvermelding
Nigeria. Federal Inland Revenue Service, Inc ebrary, en Ifueko Omoigui Okauru. FIRS Handbook on Reforms in the Tax System (2004-2011). Ibadan, Nigeria: Safari Books, 2012.
MLA (9e ed.) Bronvermelding
Nigeria. Federal Inland Revenue Service, et al. FIRS Handbook on Reforms in the Tax System (2004-2011). Safari Books, 2012.
Let op: Deze citaties zijn niet altijd 100% accuraat.