A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 
Spencer L, Ritchie J, Ormston R, O'Connor W. "Analysis: Principles and Processes." In: Ritchie J, Lewis J, McNaughton Nicholls C, Ormston R, eds. Qualitative Research Practice . London: Natcen, SAGE Publications Ltd ; 2014.
Asking Focused Questions. Vol. 2011. Oxford (UK): Centre for Evidence-Based Medicine (CEBM); 2009.
Higgins JPT, Green S. Cochrane Handbook for Systematic Reviews of Interventions. Version 5.1.0 ed. Oxford (UK): The Cochrane Collaboration; 2011.
Denzin NK, Lincoln YS. Collecting and interpreting qualitative materials. Thousand Oaks, Calif.: Sage Publications; 2008.