APA-referens (7:e uppl.)

(1936). Ermi Guide of Europe (5. ed.). American Hotel Service.

Chicago-referens (17:e uppl.)

Ermi Guide of Europe. 5. ed. Berlin: American Hotel Service, 1936.

MLA-referens (8:e uppl.)

Ermi Guide of Europe. 5. ed. American Hotel Service, 1936.