Dahmer, S. J., & Wahl, K. W. (1996). The Waiter and waitress training manual (4th ed.). Van Nostrand Reinhold.
Cita Chicago (17th ed.)Dahmer, Sondra J., i Kurt W. Wahl. The Waiter and Waitress Training Manual. 4th ed. New York: Van Nostrand Reinhold, 1996.
Cita MLA (9th ed.)Dahmer, Sondra J., i Kurt W. Wahl. The Waiter and Waitress Training Manual. 4th ed. Van Nostrand Reinhold, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.