APA-referens (7:e uppl.)

Haddock, F. C. (1918). Power of will. Pelton Pub. Co.

Chicago-referens (17:e uppl.)

Haddock, Frank Channing. Power of Will. Meriden, Conn: Pelton Pub. Co, 1918.

MLA-referens (9:e uppl.)

Haddock, Frank Channing. Power of Will. Pelton Pub. Co, 1918.