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APA-viiteNelsen, J., Erwin, C., Duffy, R., & Grey, P. (2019). Positive discipline for preschoolers: For their early years - raising children who are responsible, respectful, and resourceful (Revised 4th edition.). Harmony Books.
Chicago-tyylinen lähdeviittausNelsen, Jane, Cheryl Erwin, Roslyn Duffy, ja Paula Grey. Positive Discipline for Preschoolers: For Their Early Years - Raising Children Who Are Responsible, Respectful, and Resourceful. Revised 4th edition. New York: Harmony Books, 2019.
MLA-viiteNelsen, 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.
Harvard-tyylinen lähdeviittausNelsen, J., Erwin, C., Duffy, R. & Grey, P. 2019. Positive discipline for preschoolers: For their early years - raising children who are responsible, respectful, and resourceful. Revised 4th edition. New York: Harmony Books.