Lefton, R. (2004). Leadership through people skills. TMH.
Čikaški stil citiranja (17. izdanje)Lefton, Robert. Leadership Through People Skills. New Delhi: TMH, 2004.
MLA način citiranja (9. izdanje)Lefton, Robert. Leadership Through People Skills. TMH, 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.