Cita APA (7th ed.)
Becker, D., & Becker, P. B. (1993). Speaking skills for business careers. Irwin Mirror Press.
Cita Chicago (17th ed.)
Becker, Dennis, i Paula Borkum Becker. Speaking Skills for Business Careers. Homewood, IL: Irwin Mirror Press, 1993.
Cita MLA (9th ed.)
Becker, Dennis, i Paula Borkum Becker. Speaking Skills for Business Careers. Irwin Mirror Press, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.