Becker, D., & Becker, P. B. (1993). Speaking skills for business careers. McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Becker, Dennis, i Paula Borkum Becker. Speaking Skills for Business Careers. New York: McGraw-Hill, 1993.
MLA način citiranja (9. izdanje)Becker, Dennis, i Paula Borkum Becker. Speaking Skills for Business Careers. McGraw-Hill, 1993.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.