Bertcher, H. J. Staff development in human service organizations. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Bertcher, Harvey J. Staff Development in Human Service Organizations. Prentice-Hall.
Lua MLA (8ú heag.)Bertcher, Harvey J. Staff Development in Human Service Organizations. Prentice-Hall.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.