WALKER, J. W. (1980). Human Resource Planning James Walker. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)WALKER, James W. Human Resource Planning James Walker. McGraw-Hill, 1980.
Lua MLA (8ú heag.)WALKER, James W. Human Resource Planning James Walker. McGraw-Hill, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.