Lua APA (7ú heag.)
Engel, D. W., & Peterson, L. (2001). Passport USA: Your pocket guide to American business, culture & etiquette. World Trade Press.
Lua i Stíl Chicago (17ú heag.)
Engel, Dean W., agus Larry Peterson. Passport USA: Your Pocket Guide to American Business, Culture & Etiquette. San Rafael, Calif.: World Trade Press, 2001.
Lua MLA (9ú heag.)
Engel, Dean W., agus Larry Peterson. Passport USA: Your Pocket Guide to American Business, Culture & Etiquette. World Trade Press, 2001.
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