Boulter, N. (1999). The art of HRD: People and competencies. Crest Publishing House.
Lua i Stíl Chicago (17ú heag.)Boulter, Nick. The Art of HRD: People and Competencies. New Delhi: Crest Publishing House, 1999.
Lua MLA (8ú heag.)Boulter, Nick. The Art of HRD: People and Competencies. Crest Publishing House, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.