Southern Nigeria. Police Dept. (1907). Annual report on the Southern Nigeria police force for the year ... Govt. Printer.
Chicago-referens (17:e uppl.)Southern Nigeria. Police Dept. Annual Report on the Southern Nigeria Police Force for the Year ... [Lagos: Govt. Printer, 1907.
MLA-referens (8:e uppl.)Southern Nigeria. Police Dept. Annual Report on the Southern Nigeria Police Force for the Year ... Govt. Printer, 1907.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.