Betts, E. A., & Welch, C. M. (1963). The ABC American adventures (Teacher's edition, annotated and keyed.). American Book Company.
Citace podle Chicago (17th ed.)Betts, Emmett A., a Carolyn M. Welch. The ABC American Adventures. Teacher's edition, annotated and keyed. New York ; a Cincinnati ; Chicago ; Atlanta ; Dallas ; Millbrae: American Book Company, 1963.
Citace podle MLA (8th ed.)Betts, Emmett A., a Carolyn M. Welch. The ABC American Adventures. Teacher's edition, annotated and keyed. American Book Company, 1963.
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