Onyefulu, I., & Ifeoma Onyefulu. (1995). Emek: An African counting story. New York: Cobblehill Books.
استشهاد بنمط شيكاغوOnyefulu, Ifeoma, و Ifeoma Onyefulu. Emek: An African Counting Story. New York: Cobblehill Books, 1995.
MLA استشهادOnyefulu, Ifeoma, و Ifeoma Onyefulu. Emek: An African Counting Story. New York: Cobblehill Books, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.