Porter, J., & Lacey, P. (2005). Researching learning difficulties: A guide for practitioners. P.C.P. ; SAGE Publications.
Chicago Style (17. basım) AtıfPorter, Jill, ve Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. London : Thousand Oaks, CA: P.C.P. ; SAGE Publications, 2005.
MLA (8th ed.) AtıfPorter, Jill, ve Penny Lacey. Researching Learning Difficulties: A Guide for Practitioners. P.C.P. ; SAGE Publications, 2005.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..