Cita APA (7a ed.)

Cooper, P., Smith, C., & Upton, G. (1994). Emotional and behavioural difficulties: Theory to practice. Routledge.

Cita Chicago Style (17a ed.)

Cooper, Paul, Colin Smith, y Graham Upton. Emotional and Behavioural Difficulties: Theory to Practice. London [etc.]: Routledge, 1994.

Cita MLA (9a ed.)

Cooper, Paul, et al. Emotional and Behavioural Difficulties: Theory to Practice. Routledge, 1994.