APA

U.S. Ad Hoc Advosory Group on the Presidential Vote for Puerto Rico, . (1971). Hearings before the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. Washington, D.C: U. S. Government Printing Office.

Chicago

U.S. Ad Hoc Advosory Group on the Presidential Vote for Puerto Rico, . 1971. Hearings before the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. Washington, D.C: U. S. Government Printing Office.

Harvard

U.S. Ad Hoc Advosory Group on the Presidential Vote for Puerto Rico, . (1971). Hearings before the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. Washington, D.C: U. S. Government Printing Office.

MLA

U.S. Ad Hoc Advosory Group on the Presidential Vote for Puerto Rico, . Hearings before the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. Washington, D.C: U. S. Government Printing Office. 1971.