Nigeria, Northern Provinces of Nigeria (Nigeria). Prisons Dept, & Southern Provinces, Nigeria. Prisons Dept. (1915). Annual report on the Prison Departments of Nigeria. Govt. Printer.
Chicago-referens (17:e uppl.)Nigeria, Northern Provinces of Nigeria (Nigeria). Prisons Dept, och Nigeria. Prisons Dept Southern Provinces. Annual Report on the Prison Departments of Nigeria. Lagos: Govt. Printer, 1915.
MLA-referens (8:e uppl.)Nigeria, et al. Annual Report on the Prison Departments of Nigeria. Govt. Printer, 1915.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.