APA aipamena

Protectorate of Southern Nigeria (Nigeria). (1901). Blue book. Govt. Printer.

Chicago Style aipamena

Protectorate of Southern Nigeria (Nigeria). Blue Book. [Calabar: Govt. Printer, 1901.

MLA aipamena

Protectorate of Southern Nigeria (Nigeria). Blue Book. Govt. Printer, 1901.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.