Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Porter, Jill, y Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. London ; Thousand Oaks, California: Paul Chapman Publishing, 2005.

Cita MLA (9a ed.)

Porter, Jill, y Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. Paul Chapman Publishing, 2005.