APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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