APA aipamena

New York. Parker Publishing Company. (1965). Business etiquette handbook. [s.n.

Chicago Style aipamena

New York. Parker Publishing Company. Business Etiquette Handbook. West Nyack, N.Y: [s.n, 1965.

MLA aipamena

New York. Parker Publishing Company. Business Etiquette Handbook. [s.n, 1965.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.