Cornelius, E. G. (1974). Food service careers. C.A. Bennett Co.
Lua i Stíl Chicago (17ú heag.)Cornelius, Ethelwyn G. Food Service Careers. Peoria, Ill.: C.A. Bennett Co, 1974.
Lua MLA (8ú heag.)Cornelius, Ethelwyn G. Food Service Careers. C.A. Bennett Co, 1974.
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