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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNelsen, Jane, Cheryl Erwin, और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNelsen, 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.
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