(1981). The directory for exceptional children: A listing of educational and training facilities ; 1981 - 82 (9. ed.). Porter Sargent Publ.
Chicago-Zitierstil (17. Ausg.)The Directory for Exceptional Children: A Listing of Educational and Training Facilities ; 1981 - 82. 9. ed. Boston, MA: Porter Sargent Publ, 1981.
MLA-Zitierstil (9. Ausg.)The Directory for Exceptional Children: A Listing of Educational and Training Facilities ; 1981 - 82. 9. ed. Porter Sargent Publ, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.