Style de citation APA (7e éd.)
DiJulius, J. R. (2003). Secret service: Hidden systems that deliver unforgettable customer service. AMACOM.
Style de citation Chicago (17e éd.)
DiJulius, John R. Secret Service: Hidden Systems That Deliver Unforgettable Customer Service. New York: AMACOM, 2003.
Style de citation MLA (9e éd.)
DiJulius, John R. Secret Service: Hidden Systems That Deliver Unforgettable Customer Service. AMACOM, 2003.
Attention : ces citations peuvent ne pas être correctes à 100%.