APA-referens (7:e uppl.)
SIGAFOOS, J., & ET AL. (1995). INCREASING OPPORTUNITIES FOR REQUESTING IN CLASSROOMS SERVING CHILDREN WITH DEVELOPMENTAL DISABILITIES.
Chicago-referens (17:e uppl.)
SIGAFOOS, J., och ET AL. INCREASING OPPORTUNITIES FOR REQUESTING IN CLASSROOMS SERVING CHILDREN WITH DEVELOPMENTAL DISABILITIES. 1995.
MLA-referens (9:e uppl.)
SIGAFOOS, J., och ET AL. INCREASING OPPORTUNITIES FOR REQUESTING IN CLASSROOMS SERVING CHILDREN WITH DEVELOPMENTAL DISABILITIES. 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.