Atkinson, M. (2011). Key concepts in sport and exercise research methods. SAGE.
Chicago-viite (17. p.)Atkinson, Michael. Key Concepts in Sport and Exercise Research Methods. Los Angeles ; London ; New Delhi [etc.]: SAGE, 2011.
MLA-viite (8. p.)Atkinson, Michael. Key Concepts in Sport and Exercise Research Methods. SAGE, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.