Frankel, R. P. (2007). Observing America: The commentary of British visitors to the United States, 1890-1950. University of Wisconsin Press.
Chicago-čujuhus (17. p.)Frankel, Robert Perry. Observing America: The Commentary of British Visitors to the United States, 1890-1950. Madison, Wis.: University of Wisconsin Press, 2007.
MLA-čujuhus (9. p.)Frankel, Robert Perry. Observing America: The Commentary of British Visitors to the United States, 1890-1950. University of Wisconsin Press, 2007.
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