Lefevre, H. L. (1997). Quality service pays: Six keys to success. Vanity.
シカゴスタイル引用形Lefevre, Henry L. Quality Service Pays: Six Keys to Success. New Delhi: Vanity, 1997.
MLA引用形式Lefevre, Henry L. Quality Service Pays: Six Keys to Success. Vanity, 1997.
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