RAI, U. (2007). BUSINESS COMMUNICATION (9 ed.).
Chicago Style aipamenaRAI, URMILA. BUSINESS COMMUNICATION. 9 ed. MUMBAI, 2007.
MLA aipamenaRAI, URMILA. BUSINESS COMMUNICATION. 9 ed. 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
RAI, U. (2007). BUSINESS COMMUNICATION (9 ed.).
Chicago Style aipamenaRAI, URMILA. BUSINESS COMMUNICATION. 9 ed. MUMBAI, 2007.
MLA aipamenaRAI, URMILA. BUSINESS COMMUNICATION. 9 ed. 2007.