APA (7th ed.) Citation

Six... (1971). SIX special studies requested for the ad hoc advisory group on the presidential vote for puerto Rico. The Superintendent of Document US Government Printing Office.

Chicago Style (17th ed.) Citation

Six... SIX Special Studies Requested for the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. The Superintendent of Document US Government Printing Office, 1971.

MLA (8th ed.) Citation

Six... SIX Special Studies Requested for the Ad Hoc Advisory Group on the Presidential Vote for Puerto Rico. The Superintendent of Document US Government Printing Office, 1971.

Warning: These citations may not always be 100% accurate.