APA
Gilson E., . (1955). History of Christian Philosophy in the middle Ages. New York: Random House.
Chicago
Gilson Etienne, . 1955. History of Christian Philosophy in the middle Ages. New York: Random House.
Harvard
Gilson E., . (1955). History of Christian Philosophy in the middle Ages. New York: Random House.
MLA
Gilson Etienne, . History of Christian Philosophy in the middle Ages. New York: Random House. 1955.
