Hartson, M. G. (1946). A study of the influence of color on the preschool child's selection of certain cooked vegetables during the noon lunch program at the Pennsylvania State College Nursery School: A thesis.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hartson, Margaret Grace. A Study of the Influence of Color on the Preschool Child's Selection of Certain Cooked Vegetables During the Noon Lunch Program at the Pennsylvania State College Nursery School: A Thesis. 1946.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hartson, Margaret Grace. A Study of the Influence of Color on the Preschool Child's Selection of Certain Cooked Vegetables During the Noon Lunch Program at the Pennsylvania State College Nursery School: A Thesis. 1946.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.