National Society for Crippled Children and Adults. (1950). A manual of cerebral palsy equipment.
Chicago-viite (17. p.)National Society for Crippled Children and Adults. A Manual of Cerebral Palsy Equipment. Chicago, 1950.
MLA-viite (8. p.)National Society for Crippled Children and Adults. A Manual of Cerebral Palsy Equipment. 1950.
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