Betts, E. A., & Garst, S. (1949). Teacher's guide to Cowboys and cattle trails. Wheeler Publishing Company.
Citace podle Chicago (17th ed.)Betts, Emmett A., a Shannon Garst. Teacher's Guide to Cowboys and Cattle Trails. Chicago: Wheeler Publishing Company, 1949.
Citace podle MLA (8th ed.)Betts, Emmett A., a Shannon Garst. Teacher's Guide to Cowboys and Cattle Trails. Wheeler Publishing Company, 1949.
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