APA (7th ed.) Citation

Cowie, L. W. (1969). Martin Luther, leader of the Reformation. Praeger.

Chicago Style (17th ed.) Citation

Cowie, Leonard W. Martin Luther, Leader of the Reformation. New York: Praeger, 1969.

MLA (9th ed.) Citation

Cowie, Leonard W. Martin Luther, Leader of the Reformation. Praeger, 1969.