(1986). Selecting educational equipment and materials for school and home.
Chicago-Zitierstil (17. Ausg.)Selecting Educational Equipment and Materials for School and Home. Wheaton, Md, 1986.
MLA-Zitierstil (9. Ausg.)Selecting Educational Equipment and Materials for School and Home. 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.