APA (7th ed.) Citation

Tuchman, B. W. (1978). A distant mirror: The calamitous 14th century. Ballantine Books.

Chicago Style (17th ed.) Citation

Tuchman, Barbara Wertheim. A Distant Mirror: The Calamitous 14th Century. New York: Ballantine Books, 1978.

MLA (9th ed.) Citation

Tuchman, Barbara Wertheim. A Distant Mirror: The Calamitous 14th Century. Ballantine Books, 1978.