APA (7th ed.) Citation

Brennan, T. F. (19). Were the Middle Ages Dark? St. Paul, Minn..

Chicago Style (17th ed.) Citation

Brennan, Thomas Francis. Were the Middle Ages Dark? St. Paul, Minn., 19.

MLA (8th ed.) Citation

Brennan, Thomas Francis. Were the Middle Ages Dark? St. Paul, Minn., 19.

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