APA (7th ed.) Citation

Royal Academy of Arts (Great Britain), Eyo, E., & Willett, F. (1982). Treasures of ancient Nigeria / text by Ekpo Eyo and Frank Willett. Royal Academy of Arts in association with Collins.

Chicago Style (17th ed.) Citation

Royal Academy of Arts (Great Britain), Ekpo Eyo, and Frank Willett. Treasures of Ancient Nigeria / Text by Ekpo Eyo and Frank Willett. London: Royal Academy of Arts in association with Collins, 1982.

MLA (9th ed.) Citation

Royal Academy of Arts (Great Britain), et al. Treasures of Ancient Nigeria / Text by Ekpo Eyo and Frank Willett. Royal Academy of Arts in association with Collins, 1982.

Warning: These citations may not always be 100% accurate.