Winterbourn, R. (1944). Educating backward children in New Zealand. Whitcombe & Tombs.
Chicago-viite (17. p.)Winterbourn, Ralph. Educating Backward Children in New Zealand. Christchurch: Whitcombe & Tombs, 1944.
MLA-viite (8. p.)Winterbourn, Ralph. Educating Backward Children in New Zealand. Whitcombe & Tombs, 1944.
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