APA (7th ed.) Citation

Keen, R. (1990). The moral world of Philipp Melanchthon.

Chicago Style (17th ed.) Citation

Keen, Ralph. The Moral World of Philipp Melanchthon. 1990.

MLA (9th ed.) Citation

Keen, Ralph. The Moral World of Philipp Melanchthon. 1990.

Warning: These citations may not always be 100% accurate.