APA (7. basım) Alıntı

Packard, S. R. (1927). Europe and the church under Innocent III. H. Holt and Company.

Chicago Style (17. basım) Atıf

Packard, Sidney R. Europe and the Church Under Innocent III. New York: H. Holt and Company, 1927.

MLA (9th ed.) Atıf

Packard, Sidney R. Europe and the Church Under Innocent III. H. Holt and Company, 1927.