Cita APA (7a ed.)

Hutchinson, N., & Smith, H. (2004). Intervening early: Promoting positive behaviour in young children. David Fulton Publishers.

Cita Chicago Style (17a ed.)

Hutchinson, Nicky, y Hilary Smith. Intervening Early: Promoting Positive Behaviour in Young Children. Abingdon, Oxon: David Fulton Publishers, 2004.

Cita MLA (9a ed.)

Hutchinson, Nicky, y Hilary Smith. Intervening Early: Promoting Positive Behaviour in Young Children. David Fulton Publishers, 2004.