Style de citation APA (7e éd.)
Nigeria. Federal Inland Revenue Service, ebrary, Inc, & Okauru, I. O. (2012). FIRS handbook on reforms in the tax system (2004-2011). Safari Books.
Style de citation Chicago (17e éd.)
Nigeria. Federal Inland Revenue Service, Inc ebrary, et Ifueko Omoigui Okauru. FIRS Handbook on Reforms in the Tax System (2004-2011). Ibadan, Nigeria: Safari Books, 2012.
Style de citation MLA (9e éd.)
Nigeria. Federal Inland Revenue Service, et al. FIRS Handbook on Reforms in the Tax System (2004-2011). Safari Books, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.