Lefevre, H. L. (1997). Quality service pays: Six keys to success. Vanity.
Chicago Style citaatLefevre, Henry L. Quality Service Pays: Six Keys to Success. New Delhi: Vanity, 1997.
MLA citatieLefevre, Henry L. Quality Service Pays: Six Keys to Success. Vanity, 1997.
Let op: Deze citaties zijn niet altijd 100% accuraat.