Protectorate of Southern Nigeria (Nigeria). (1901). Blue book. Govt. Printer.
Chicago Style aipamenaProtectorate of Southern Nigeria (Nigeria). Blue Book. [Calabar: Govt. Printer, 1901.
MLA aipamenaProtectorate of Southern Nigeria (Nigeria). Blue Book. Govt. Printer, 1901.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.