Cita APA (7th ed.)
Tuunman, A. C. (1989). International encyclopedia of adult education and training.
Cita Chicago (17th ed.)
Tuunman, Albert C. International Encyclopedia of Adult Education and Training. 1989.
Cita MLA (9th ed.)
Tuunman, Albert C. International Encyclopedia of Adult Education and Training. 1989.
Atenció: Aquestes cites poden no estar 100% correctes.