Kahrl, W. L. (1973). Planning and operating a successful food service operation. Chain Store Age Books.
Cita Chicago (17th ed.)Kahrl, William L. Planning and Operating a Successful Food Service Operation. New York: Chain Store Age Books, 1973.
Cita MLA (9th ed.)Kahrl, William L. Planning and Operating a Successful Food Service Operation. Chain Store Age Books, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.