APA aipamena

Northern Provinces of Nigeria (Nigeria). Police Dept. (1917). Annual report on the Police Department, Northern Provinces, for the year .. Govt. Printer.

Chicago Style aipamena

Northern Provinces of Nigeria (Nigeria). Police Dept. Annual Report on the Police Department, Northern Provinces, for the Year .. Lagos: Govt. Printer, 1917.

MLA aipamena

Northern Provinces of Nigeria (Nigeria). Police Dept. Annual Report on the Police Department, Northern Provinces, for the Year .. Govt. Printer, 1917.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.