Nigeria, Northern Provinces of Nigeria (Nigeria). Prisons Dept, & Southern Provinces, Nigeria. Prisons Dept. (1915). Annual report on the Prison Departments of Nigeria. Govt. Printer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Nigeria, Northern Provinces of Nigeria (Nigeria). Prisons Dept, και Nigeria. Prisons Dept Southern Provinces. Annual Report on the Prison Departments of Nigeria. Lagos: Govt. Printer, 1915.
Παραπομπή σε μορφή MLA (8th εκδ.)Nigeria, et al. Annual Report on the Prison Departments of Nigeria. Govt. Printer, 1915.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.