ABELLA KAY TYTLER. (1986). BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. ADDISON-WESLEY.
Lua i Stíl Chicago (17ú heag.)ABELLA KAY TYTLER. BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. CALIFORNIA: ADDISON-WESLEY, 1986.
Lua MLA (9ú heag.)ABELLA KAY TYTLER. BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. ADDISON-WESLEY, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.