Holt, R., & Geiger, E. J. (1974). George Washington Carver: A great American Negro teacher. Dell Publishing Co.
Chicagoスタイル(17版)引用形式Holt, Rackham, , Elizabeth J. Geiger. George Washington Carver: A Great American Negro Teacher. New York: Dell Publishing Co, 1974.
MLA(9版)引用形式Holt, Rackham, , Elizabeth J. Geiger. George Washington Carver: A Great American Negro Teacher. Dell Publishing Co, 1974.
警告: この引用は必ずしも正確ではありません.