Kok, M. R. (1983). Prevocational Instructional Materials. A Resource Guide. Vocational Special Needs Lending Library.
Chicago-Zitierstil (17. Ausg.)Kok, Marilyn R. Prevocational Instructional Materials. A Resource Guide. Vocational Special Needs Lending Library. 1983.
MLA-Zitierstil (9. Ausg.)Kok, Marilyn R. Prevocational Instructional Materials. A Resource Guide. Vocational Special Needs Lending Library. 1983.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.