Não informado. (1990). Journal of Educational and Psychological Consultation. Lawrence Erlbaum Associates.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of Educational and Psychological Consultation. Hillsdale, NJ: Lawrence Erlbaum Associates, 1990.
Lua MLA (8ú heag.)Não informado. Journal of Educational and Psychological Consultation. Lawrence Erlbaum Associates, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.