Cita APA (7a ed.)

Koeries, J., Marris, B., & Rae, T. (2005). Problem postcards: Social, emotional, and behavioural skills training for disaffected and difficult children aged 7 to 11. Paul Chapman Pub.

Cita Chicago Style (17a ed.)

Koeries, Janine, Brian Marris, y Tina Rae. Problem Postcards: Social, Emotional, and Behavioural Skills Training for Disaffected and Difficult Children Aged 7 to 11. London : Thousand Oaks, Calif. : SAGE: Paul Chapman Pub, 2005.

Cita MLA (9a ed.)

Koeries, Janine, et al. Problem Postcards: Social, Emotional, and Behavioural Skills Training for Disaffected and Difficult Children Aged 7 to 11. Paul Chapman Pub, 2005.