Robertson, F. C. (1934). Thunder in the west. D. Appleton-Century company incorporated.
Chicago-viite (17. p.)Robertson, Frank Chester. Thunder in the West. New York, London: D. Appleton-Century company incorporated, 1934.
MLA-viite (9. p.)Robertson, Frank Chester. Thunder in the West. D. Appleton-Century company incorporated, 1934.
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