Παραπομπή APA

Lefevre, H. L. (1997). Quality service pays: Six keys to success. Vanity.

Παραπομπή Chicago Style

Lefevre, Henry L. Quality Service Pays: Six Keys to Success. New Delhi: Vanity, 1997.

Παραπομπή MLA

Lefevre, Henry L. Quality Service Pays: Six Keys to Success. Vanity, 1997.