Onyefulu, I., 1940- 1950- 1963- 1951- 1953-, & 1950- 1963-. (1995). Emeka's gift: An African counting story. New York: Cobblehill Books.
シカゴスタイル引用形Onyefulu, Ifeoma., 1940- 1950- 1963- 1951- 1953-, , 1950- 1963-. Emeka's Gift: An African Counting Story. New York: Cobblehill Books, 1995.
MLA引用形式Onyefulu, Ifeoma., 1940- 1950- 1963- 1951- 1953-, , 1950- 1963-. Emeka's Gift: An African Counting Story. New York: Cobblehill Books, 1995.
警告: この引用は必ずしも正確ではありません.