RUSSELL TIM. (1994). EFFECTIVE FEEDBACK SKILLS. KOGAN PAGE.
Lua i Stíl Chicago (17ú heag.)RUSSELL TIM. EFFECTIVE FEEDBACK SKILLS. LONDON: KOGAN PAGE, 1994.
Lua MLA (9ú heag.)RUSSELL TIM. EFFECTIVE FEEDBACK SKILLS. KOGAN PAGE, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.