APA-referens (7:e uppl.)

Southworth, G. V. D., & Southworth, J. V. D. (1959). A work book on The story of our America (Rev. ed.). Iroquois Pub. Co..

Chicago-referens (17:e uppl.)

Southworth, Gertrude Van Duyn, och John Van Duyn Southworth. A Work Book on The Story of Our America. Rev. ed. Syracuse, N.Y.: Iroquois Pub. Co., 1959.

MLA-referens (8:e uppl.)

Southworth, Gertrude Van Duyn, och John Van Duyn Southworth. A Work Book on The Story of Our America. Rev. ed. Iroquois Pub. Co., 1959.