1. Committee on Publication Ethics 2016 About COPE http://publicationethics.org/about
2. Cornell University Library 2016 Critically analyzing information sources: Critical appraisal and analysis http://guides.library.cornell.edu/criticallyanalyzing
3. Step-by-step guide to critiquing research. Part 1: quantitative research;Coughlan;British Journal of Nursing,2007a
4. Step-by-step guide to critiquing research. Part 2: qualitative research;Coughlan;British Journal of Nursing,2007b