Ludlow, R., & Panton, F. . .. (1992). Essence of effective communicatin. Prentice Hall of India.
Chicago Style aipamenaLudlow, Ron, and Fergus Panton. Essence of Effective Communicatin. New Delhi: Prentice Hall of India, 1992.
MLA aipamenaLudlow, Ron, and Fergus Panton. Essence of Effective Communicatin. Prentice Hall of India, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.