Gannett, H., Garrison, C. L., & Houston, E. J. (1905). Commercial geography. American Book.
Cita Chicago Style (17a ed.)Gannett, Henry, Carl Louise Garrison, y Edwin James Houston. Commercial Geography. New York [etc.]: American Book, 1905.
Cita MLA (9a ed.)Gannett, Henry, et al. Commercial Geography. American Book, 1905.
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