Fagg, B. (1977). Nok terracottas. Ethnographica for the National Museum.
Chicago Style (17th ed.) ZitazioaFagg, Bernard. Nok Terracottas. London: Ethnographica for the National Museum, 1977.
MLA (9th ed.) ZitazioaFagg, Bernard. Nok Terracottas. Ethnographica for the National Museum, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.