Merriam, S. B., & Caffarella, R. S. (1991). Learning in adulthood: A comprehensive guide. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Merriam, Sharan B., agus Rosemary S. Caffarella. Learning in Adulthood: A Comprehensive Guide. San Francisco: Jossey-Bass, 1991.
Lua MLA (8ú heag.)Merriam, Sharan B., agus Rosemary S. Caffarella. Learning in Adulthood: A Comprehensive Guide. Jossey-Bass, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.