Hayes, J. K. (1982). The merging years: A history of St. Peter Parish, Keokuk, Iowa, 1832-1982. s.n.].
Lua i Stíl Chicago (17ú heag.)Hayes, Jean K. The Merging Years: A History of St. Peter Parish, Keokuk, Iowa, 1832-1982. [S.l.: s.n.], 1982.
Lua MLA (8ú heag.)Hayes, Jean K. The Merging Years: A History of St. Peter Parish, Keokuk, Iowa, 1832-1982. s.n.], 1982.
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