Southworth, G. V. D., & Southworth, J. V. D. (1958). A work book on Long ago in the Old World. Iroquois Pub. Co..
Citace podle Chicago (17th ed.)Southworth, Gertrude Van Duyn, a John Van Duyn Southworth. A Work Book on Long Ago in the Old World. Syracuse, N.Y.: Iroquois Pub. Co., 1958.
Citace podle MLA (8th ed.)Southworth, Gertrude Van Duyn, a John Van Duyn Southworth. A Work Book on Long Ago in the Old World. Iroquois Pub. Co., 1958.
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