APA način citiranja (7. izdanje)
Scales, P. (2011). Continuing professional development in the lifelong learning sector. Open University Press.
Čikaški stil citiranja (17. izdanje)
Scales, Peter. Continuing Professional Development in the Lifelong Learning Sector. Berkshire, England: Open University Press, 2011.
MLA način citiranja (9. izdanje)
Scales, Peter. Continuing Professional Development in the Lifelong Learning Sector. Open University Press, 2011.
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