Freund, P. A. (1967). Constitutional law: Cases and other problems (3rd ed.). Little, Brown.
Citazione stile Chigago Style (17a edizione)Freund, Paul Abraham. Constitutional Law: Cases and Other Problems. 3rd ed. Boston: Little, Brown, 1967.
Citatione MLA (9a ed.)Freund, Paul Abraham. Constitutional Law: Cases and Other Problems. 3rd ed. Little, Brown, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.