Merriam, S. B., Caffarella, R. S., & Baumgartner, L. (2007). Learning in adulthood: A comprehensive guide (Third edition.). Jossey-Bass.
Chicago-viite (17. p.)Merriam, Sharan B., Rosemary S. Caffarella, ja Lisa Baumgartner. Learning in Adulthood: A Comprehensive Guide. Third edition. San Francisco: Jossey-Bass, 2007.
MLA-viite (8. p.)Merriam, Sharan B., et al. Learning in Adulthood: A Comprehensive Guide. Third edition. Jossey-Bass, 2007.
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