APA (7th ed.) Citation

Gilson, M. B. (1980). What's past is prologue (Reprint of the 1940 ed. publ. by Harper, New York & London.). Arno Press.

Chicago Style (17th ed.) Citation

Gilson, Mary Barnett. What's Past Is Prologue. Reprint of the 1940 ed. publ. by Harper, New York & London. New York: Arno Press, 1980.

MLA (9th ed.) Citation

Gilson, Mary Barnett. What's Past Is Prologue. Reprint of the 1940 ed. publ. by Harper, New York & London. Arno Press, 1980.