APA (7th ed.) Citation

Ambrose, S. (2007). On the Duties of the Clergy. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ambrose, Saint. On the Duties of the Clergy. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Ambrose, Saint. On the Duties of the Clergy. Project Gutenberg, 2007.

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