Gesell, A. (1923). The pre-school child from the standpoint of public hygiene and education. Houghton Mifflin Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gesell, Arnold. The Pre-school Child from the Standpoint of Public Hygiene and Education. Boston, New York [etc.]: Houghton Mifflin Company, 1923.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gesell, Arnold. The Pre-school Child from the Standpoint of Public Hygiene and Education. Houghton Mifflin Company, 1923.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.