APA引文

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引文

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

警告：這些引文格式不一定是100％准確.