الغذاء والتغذية
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* Engen, H.B,: Iasiello-Vailas, L. and Smith, K. L. (١٩٨٣) : Confrontration: a new dimension in nutrition counseling. J. Am. Diet. Assoc. ٨٣: ٣٤.
* Sakr, A. H. (١٩٧١) : Dietary regulations and food habits of Muslims. J. Am. Diet Assoc. ٥٨: ١٢٣.