Ivowi, U. M. O. (1988). Moral education for junior secondary schools (First publ. 1985, rev. ed., repr.). Evans Brothers (Nigeria Publ.
Citazione stile Chigago Style (17a edizione)Ivowi, U. M. O. Moral Education for Junior Secondary Schools. First publ. 1985, rev. ed., repr. Ibadan: Evans Brothers (Nigeria Publ, 1988.
Citatione MLA (9a ed.)Ivowi, U. M. O. Moral Education for Junior Secondary Schools. First publ. 1985, rev. ed., repr. Evans Brothers (Nigeria Publ, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.