APA

Wise S. S., . (1949). Challenging years: the autobiography of Stephen Wise. New York: Putman's Sons.

Chicago

Wise Stephen Samuel, . 1949. Challenging years: the autobiography of Stephen Wise. New York: Putman's Sons.

Harvard

Wise S. S., . (1949). Challenging years: the autobiography of Stephen Wise. New York: Putman's Sons.

MLA

Wise Stephen Samuel, . Challenging years: the autobiography of Stephen Wise. New York: Putman's Sons. 1949.