Cita APA (7th ed.)

Porter, J., & Lacey, P. (2005). Researching learning difficulties: A guide for practitioners. P. Chapman.

Cita Chicago (17th ed.)

Porter, Jill, i Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. London: P. Chapman, 2005.

Cita MLA (9th ed.)

Porter, Jill, i Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. P. Chapman, 2005.