APA (7e ed.) Bronvermelding

Hazen, C. D. (1931). Modern Europe (2nd ed.). H. Holt and Co.

Chicago (17e ed.) Bronvermelding

Hazen, Charles Downer. Modern Europe. 2nd ed. New York: H. Holt and Co, 1931.

MLA (9e ed.) Bronvermelding

Hazen, Charles Downer. Modern Europe. 2nd ed. H. Holt and Co, 1931.