Freund, P. A. (1967). Constitutional law: Cases and other problems (3rd ed.). Little, Brown.
Lua i Stíl Chicago (17ú heag.)Freund, Paul Abraham. Constitutional Law: Cases and Other Problems. 3rd ed. Boston: Little, Brown, 1967.
Lua MLA (9ú heag.)Freund, Paul Abraham. Constitutional Law: Cases and Other Problems. 3rd ed. Little, Brown, 1967.
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