Não informado. (1983). The British journal of developmental psychology. British Psychological Society.
Lua i Stíl Chicago (17ú heag.)Não informado. The British Journal of Developmental Psychology. Leicester, Inglaterra: British Psychological Society, 1983.
Lua MLA (8ú heag.)Não informado. The British Journal of Developmental Psychology. British Psychological Society, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.