APA-viite (7. p.)
KWOK, S., & ET AL. (1996). OCULAR DEFECTS IN CHILDREN AND ADOLESCENTS WITH SEVERE MENTAL DEFICIENCY.
Chicago-viite (17. p.)
KWOK, S.K, ja ET AL. OCULAR DEFECTS IN CHILDREN AND ADOLESCENTS WITH SEVERE MENTAL DEFICIENCY. 1996.
MLA-viite (9. p.)
KWOK, S.K, ja ET AL. OCULAR DEFECTS IN CHILDREN AND ADOLESCENTS WITH SEVERE MENTAL DEFICIENCY. 1996.
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