ECKEL, P. J. (1985). College And University Foodservice Management Standars Peter J. Eckel. The Avi Publishing Company.
Lua i Stíl Chicago (17ú heag.)ECKEL, Peter J. College And University Foodservice Management Standars Peter J. Eckel. The Avi Publishing Company, 1985.
Lua MLA (8ú heag.)ECKEL, Peter J. College And University Foodservice Management Standars Peter J. Eckel. The Avi Publishing Company, 1985.
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