Citazione Stile APA (7a Edizione)

Eyo, E., Held, A., & Held, U. (1977). Two thousand years, nigerian art. Federal Dept. of Antiquities.

Citazione stile Chigago Style (17a edizione)

Eyo, Ekpo, Andr Held, e Ursula Held. Two Thousand Years, Nigerian Art. Lagos: Federal Dept. of Antiquities, 1977.

Citatione MLA (9a ed.)

Eyo, Ekpo, et al. Two Thousand Years, Nigerian Art. Federal Dept. of Antiquities, 1977.