Hewitt, W. C. (1891). Civil government of the United States (7th ed., rev. and enl.). H.R. Pattengill.
Lua i Stíl Chicago (17ú heag.)Hewitt, W. C. Civil Government of the United States. 7th ed., rev. and enl. Lansing, Mich.: H.R. Pattengill, 1891.
Lua MLA (8ú heag.)Hewitt, W. C. Civil Government of the United States. 7th ed., rev. and enl. H.R. Pattengill, 1891.
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