APA

(1956). Abraham Lincoln : Lord Charnwood. New York: Pocket Books INC.

Chicago

1956. Abraham Lincoln : Lord Charnwood. New York: Pocket Books INC.

Harvard

(1956). Abraham Lincoln : Lord Charnwood. New York: Pocket Books INC.

MLA

Abraham Lincoln : Lord Charnwood. New York: Pocket Books INC. 1956.