Kassler, R. (1984). Projection arrangements and overhead projector: An instructional aid for workers' educators and trade unionists (2. impr.). Internat. Labour Office.
Chicago-Zitierstil (17. Ausg.)Kassler, Reinhard. Projection Arrangements and Overhead Projector: An Instructional Aid for Workers' Educators and Trade Unionists. 2. impr. Geneva: Internat. Labour Office, 1984.
MLA-Zitierstil (9. Ausg.)Kassler, Reinhard. Projection Arrangements and Overhead Projector: An Instructional Aid for Workers' Educators and Trade Unionists. 2. impr. Internat. Labour Office, 1984.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.