APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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