APA

Knowles D., . (1964). The evolution of medieval thought. New York: Vintage Books.

Chicago

Knowles David, . 1964. The evolution of medieval thought. New York: Vintage Books.

Harvard

Knowles D., . (1964). The evolution of medieval thought. New York: Vintage Books.

MLA

Knowles David, . The evolution of medieval thought. New York: Vintage Books. 1964.