Oliver, Leonard P., Is the United States Ready for a Study Circle Movement?Adult Learning, March/April 1995.
2.
Oliver, Leonard P., "Study Circles: Individual Growth Through Collaborative Learning." New Directions for Adult and Continuing Education. No. 53, Spring 1992.
3.
The StudyCircle Handbook, A Manual for Study Circle Discussion Leaders, Organizers and Participants, Study CirclesResource Center, 1993, Topsfield Foundation, Inc.