APA (7th ed.) Citation

Zwingli, U., & Potter, G. R. (1978). Huldrych Zwingli. St. Martin's Press.

Chicago Style (17th ed.) Citation

Zwingli, Ulrich, and G. R. Potter. Huldrych Zwingli. New York: St. Martin's Press, 1978.

MLA (9th ed.) Citation

Zwingli, Ulrich, and G. R. Potter. Huldrych Zwingli. St. Martin's Press, 1978.