Ford, G. B. (1969). A degree of difference. Farrar, Straus & Giroux.
Chicagoスタイル(17版)引用形式Ford, George Barry. A Degree of Difference. New York: Farrar, Straus & Giroux, 1969.
MLA(8版)引用形式Ford, George Barry. A Degree of Difference. Farrar, Straus & Giroux, 1969.
警告: この引用は必ずしも正確ではありません.