ebrary, Inc, Nesbit, T., & Welton, M. (2013). Adult education and learning in precarious age: The Hamburg declaration revisited. Jossey-Bass.
Chicago-referens (17:e uppl.)ebrary, Inc, Tom Nesbit, och Michael Welton. Adult Education and Learning in Precarious Age: The Hamburg Declaration Revisited. San Francisco, Calif.: Jossey-Bass, 2013.
MLA-referens (9:e uppl.)ebrary, Inc, et al. Adult Education and Learning in Precarious Age: The Hamburg Declaration Revisited. Jossey-Bass, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.