ABELLA KAY TYTLER. (1986). BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. ADDISON-WESLEY.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रABELLA KAY TYTLER. BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. CALIFORNIA: ADDISON-WESLEY, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रABELLA KAY TYTLER. BUILDING SUCCESSFUL TRAINING PROGRAMMES: A STEP BY STEP GUIDE. ADDISON-WESLEY, 1986.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.