Nelsen, J., Erwin, C., & Duffy, R. (2019). Positive discipline for preschoolers: For their early years--raising children who are responsible, respectful, and resourceful (Revised 4th edition.). Harmony Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nelsen, Jane, Cheryl Erwin, و Roslyn Duffy. Positive Discipline for Preschoolers: For Their Early Years--raising Children Who Are Responsible, Respectful, and Resourceful. Revised 4th edition. New York: Harmony Books, 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nelsen, Jane, et al. Positive Discipline for Preschoolers: For Their Early Years--raising Children Who Are Responsible, Respectful, and Resourceful. Revised 4th edition. Harmony Books, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.