Mandino, O. (1968). The greatest salesman in the world. Frederick Fell.
Chicagoスタイル(17版)引用形式Mandino, Og. The Greatest Salesman in the World. New York: Frederick Fell, 1968.
MLA(9版)引用形式Mandino, Og. The Greatest Salesman in the World. Frederick Fell, 1968.
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