Não informado. (1981). Performance Evaluation. North Holland Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Performance Evaluation. Amsterdam: North Holland Publishing, 1981.
Lua MLA (8ú heag.)Não informado. Performance Evaluation. North Holland Publishing, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.