Sheal, P. (1999). The art of HRD: The staff development handbook. Crest Publishing House.
Lua i Stíl Chicago (17ú heag.)Sheal, Peter. The Art of HRD: The Staff Development Handbook. New Delhi: Crest Publishing House, 1999.
Lua MLA (8ú heag.)Sheal, Peter. The Art of HRD: The Staff Development Handbook. Crest Publishing House, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.