Winterbourn, R. (1944). Educating backward children in New Zealand. Whitcombe & Tombs.
Cita Chicago (17th ed.)Winterbourn, Ralph. Educating Backward Children in New Zealand. Christchurch: Whitcombe & Tombs, 1944.
Cita MLA (8th ed.)Winterbourn, Ralph. Educating Backward Children in New Zealand. Whitcombe & Tombs, 1944.
Atenció: Aquestes cites poden no estar 100% correctes.