Cita APA (7th ed.)

McCaffree, M. J., & Innis, P. B. (1977). Protocol: The complete handbook of diplomatic, official and social usage. Prentice-Hall.

Cita Chicago (17th ed.)

McCaffree, Mary Jane, i Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official and Social Usage. Englewood Cliffs, N.J: Prentice-Hall, 1977.

Cita MLA (9th ed.)

McCaffree, Mary Jane, i Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official and Social Usage. Prentice-Hall, 1977.