Cita APA (7th ed.)

McCaffree, M. J., & Innis, P. B. (1989). Protocol: The complete handbook of diplomatic, official, and social usage (Rev. ed.). Devon Pub.

Cita Chicago (17th ed.)

McCaffree, Mary Jane, i Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official, and Social Usage. Rev. ed. Washington, D.C: Devon Pub, 1989.

Cita MLA (9th ed.)

McCaffree, Mary Jane, i Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official, and Social Usage. Rev. ed. Devon Pub, 1989.