APA

Funck-Brentano F., O'Neill E., . (1922). Middle ages. New York: Putnam.

Chicago

Funck-Brentano Frantz, O'Neill Elizabeth, . 1922. Middle ages. New York: Putnam.

Harvard

Funck-Brentano F., O'Neill E., . (1922). Middle ages. New York: Putnam.

MLA

Funck-Brentano Frantz, O'Neill Elizabeth, . Middle ages. New York: Putnam. 1922.