Clemens, J. (1840). Sub-Series 22: Clemens, James, 1840-1842. Saint Louis University Libraries Digitization Center.
Chicago-viite (17. p.)Clemens, James. Sub-Series 22: Clemens, James, 1840-1842. Saint Louis University Libraries Digitization Center, 1840.
MLA-viite (8. p.)Clemens, James. Sub-Series 22: Clemens, James, 1840-1842. Saint Louis University Libraries Digitization Center, 1840.
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