Light, P. C. (1999). A delicate balance: An essential introduction to American government. Bedford/St. Martin's.
Lua i Stíl Chicago (17ú heag.)Light, Paul Charles. A Delicate Balance: An Essential Introduction to American Government. Boston: Bedford/St. Martin's, 1999.
Lua MLA (8ú heag.)Light, Paul Charles. A Delicate Balance: An Essential Introduction to American Government. Bedford/St. Martin's, 1999.
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