APA aipamena

Gavino, R. T. (1973). Social usage and protocol (4th ed.). s.n.].

Chicago Style aipamena

Gavino, Roman T. Social Usage and Protocol. 4th ed. [Makati, Rizal: s.n.], 1973.

MLA aipamena

Gavino, Roman T. Social Usage and Protocol. 4th ed. s.n.], 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.