Lua APA (7ú heag.)
International Association for Food Protection & Tharp, D. W. (2003). Food protection trends (1a ed.). International Association for Food Protection.
Lua i Stíl Chicago (17ú heag.)
International Association for Food Protection agus David W. Tharp. Food Protection Trends. 1a ed. Des Moines, Iowa: International Association for Food Protection, 2003.
Lua MLA (9ú heag.)
International Association for Food Protection agus David W. Tharp. Food Protection Trends. 1a ed. International Association for Food Protection, 2003.
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