Cita APA (7a ed.)

Wyckoff, J., & Unell, B. C. (2002). Discipline without shouting or spanking: Practical solutions to the most common preschool behavior problems (Rev. and expanded ed.). Hinkler Books.

Cita Chicago Style (17a ed.)

Wyckoff, Jerry, y Barbara C. Unell. Discipline Without Shouting or Spanking: Practical Solutions to the Most Common Preschool Behavior Problems. Rev. and expanded ed. Dingley, Victoria: Hinkler Books, 2002.

Cita MLA (9a ed.)

Wyckoff, Jerry, y Barbara C. Unell. Discipline Without Shouting or Spanking: Practical Solutions to the Most Common Preschool Behavior Problems. Rev. and expanded ed. Hinkler Books, 2002.