McCaffree, M. J., & Innis, P. B. (1989). Protocol: The complete handbook of diplomatic, official, and social usage (Rev. ed.). Devon Pub.
Lua i Stíl Chicago (17ú heag.)McCaffree, Mary Jane, agus Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official, and Social Usage. Rev. ed. Washington, D.C: Devon Pub, 1989.
Lua MLA (9ú heag.)McCaffree, Mary Jane, agus Pauline B. Innis. Protocol: The Complete Handbook of Diplomatic, Official, and Social Usage. Rev. ed. Devon Pub, 1989.
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