Kreitner, R. (1999). Management (7th ed.). Houghton Mifflin, A.I.T.B.S.
Lua i Stíl Chicago (17ú heag.)Kreitner, Robert. Management. 7th ed. Boston, India: Houghton Mifflin, A.I.T.B.S, 1999.
Lua MLA (8ú heag.)Kreitner, Robert. Management. 7th ed. Houghton Mifflin, A.I.T.B.S, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.