Gordman Robert. (2006). Must-Have Customer: 7 steps to winning the customer you haven't got. Truman Talley Books St.Martin Press.
Chicagoスタイル(17版)引用形式Gordman Robert. Must-Have Customer: 7 Steps to Winning the Customer You Haven't Got. NewYork: Truman Talley Books St.Martin Press, 2006.
MLA(9版)引用形式Gordman Robert. Must-Have Customer: 7 Steps to Winning the Customer You Haven't Got. Truman Talley Books St.Martin Press, 2006.
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