Style de citation APA (7e éd.)

Southworth, G. V. D., & Southworth, J. V. D. (1959). Long ago in the Old World. Iroquois Pub. Co..

Style de citation Chicago (17e éd.)

Southworth, Gertrude Van Duyn, et John Van Duyn Southworth. Long Ago in the Old World. Syracuse, N.Y.: Iroquois Pub. Co., 1959.

Style de citation MLA (8e éd.)

Southworth, Gertrude Van Duyn, et John Van Duyn Southworth. Long Ago in the Old World. Iroquois Pub. Co., 1959.