Lua APA (7ú heag.)

DUYFF, R. L. (2006). American Dietetic association complete food and nutrition guide (3rd Edition.). John Wiley & Sons.

Lua i Stíl Chicago (17ú heag.)

DUYFF, Roberta Larson. American Dietetic Association Complete Food and Nutrition Guide. 3rd Edition. New Jersey: John Wiley & Sons, 2006.

Lua MLA (9ú heag.)

DUYFF, Roberta Larson. American Dietetic Association Complete Food and Nutrition Guide. 3rd Edition. John Wiley & Sons, 2006.

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