Heathcock, C. L. (1968). The United States Constitution in perspective. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Heathcock, Claude L. The United States Constitution in Perspective. Boston: Allyn and Bacon, 1968.
Lua MLA (8ú heag.)Heathcock, Claude L. The United States Constitution in Perspective. Allyn and Bacon, 1968.
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