Cita APA (7th ed.)

Christophersen, E. R., & Mortweet, S. L. (2003). Parenting that works: Building skills that last a lifetime. American Psychological Association.

Cita Chicago (17th ed.)

Christophersen, Edward R., i Susan L. Mortweet. Parenting That Works: Building Skills That Last a Lifetime. Washington, D.C: American Psychological Association, 2003.

Cita MLA (9th ed.)

Christophersen, Edward R., i Susan L. Mortweet. Parenting That Works: Building Skills That Last a Lifetime. American Psychological Association, 2003.