Eyo Ekpo, Bakker Dirk Photographer, Binns, B., Krichbaum Rollyn O., & Willett Frank. (1980). Treasures of ancient nigeria (First edition.). Alfred A. Knopf.
Citazione stile Chigago Style (17a edizione)Eyo Ekpo, Bakker Dirk Photographer, Betty Binns, Krichbaum Rollyn O., e Willett Frank. Treasures of Ancient Nigeria. First edition. New York: Alfred A. Knopf, 1980.
Citatione MLA (9a ed.)Eyo Ekpo, et al. Treasures of Ancient Nigeria. First edition. Alfred A. Knopf, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.