Não informado. (1992). Journal of Occupational and Organizational Psychology. British Psychological Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Occupational and Organizational Psychology. Leicester, Inglaterra: British Psychological Society, 1992.
Lua MLA (8ú heag.)Não informado. Journal of Occupational and Organizational Psychology. British Psychological Society, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.