Ser-Vo-Tel Institute. (1977). Sandwich preparation. Cahners Books.
Cita Chicago (17th ed.)Ser-Vo-Tel Institute. Sandwich Preparation. Boston: Cahners Books, 1977.
Cita MLA (9th ed.)Ser-Vo-Tel Institute. Sandwich Preparation. Cahners Books, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.