APA aipamena

(2015). Business etiquette. CandidCareer.com.

Chicago Style aipamena

Business Etiquette. United States: CandidCareer.com, 2015.

MLA aipamena

Business Etiquette. CandidCareer.com, 2015.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.