APA (7th ed.) Zitazioa

Nigeria. Federal Inland Revenue Service, ebrary, Inc, & Okauru, I. O. (2012). A comprehensive tax history of Nigeria. Safari Books.

Chicago Style (17th ed.) Zitazioa

Nigeria. Federal Inland Revenue Service, Inc ebrary, eta Ifueko Omoigui Okauru. A Comprehensive Tax History of Nigeria. Ibadan, Nigeria: Safari Books, 2012.

MLA (9th ed.) Zitazioa

Nigeria. Federal Inland Revenue Service, et al. A Comprehensive Tax History of Nigeria. Safari Books, 2012.