APA (7th ed.) Citation

Merriam, S. B. (1993). An Update on adult learning theory. Jossey-Bass.

Chicago Style (17th ed.) Citation

Merriam, Sharan B. An Update on Adult Learning Theory. San Francisco: Jossey-Bass, 1993.

MLA (9th ed.) Citation

Merriam, Sharan B. An Update on Adult Learning Theory. Jossey-Bass, 1993.