Johnson, S. R., & Johnson, R. B. (1970). Developing individualized instructional material: A self-instructional material in itself. Westinghouse learning Pr.
Chicago-Zitierstil (17. Ausg.)Johnson, Stuart R., und Rita B. Johnson. Developing Individualized Instructional Material: A Self-instructional Material in Itself. Palo Alto, Calif: Westinghouse learning Pr, 1970.
MLA-Zitierstil (9. Ausg.)Johnson, Stuart R., und Rita B. Johnson. Developing Individualized Instructional Material: A Self-instructional Material in Itself. Westinghouse learning Pr, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.