APA
edied by Harriet G Kopp, . (1968). Curriculum : cognition and content. Alexander Graham Bell Asso. for the Deaf,Inc., Washington: .
Chicago
edied by Harriet G Kopp, . 1968. Curriculum : cognition and content. Alexander Graham Bell Asso. for the Deaf,Inc., Washington: .
Harvard
edied by Harriet G Kopp, . (1968). Curriculum : cognition and content. Alexander Graham Bell Asso. for the Deaf,Inc., Washington: .
MLA
edied by Harriet G Kopp, . Curriculum : cognition and content. Alexander Graham Bell Asso. for the Deaf,Inc., Washington: . 1968.