Rowson , p. (2005). Effeetive telemarketing. Infinity Books.
Chicago Style aipamenaRowson , pauline. Effeetive Telemarketing. Delhi: Infinity Books, 2005.
MLA aipamenaRowson , pauline. Effeetive Telemarketing. Infinity Books, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.