APA (7th ed.) Citation

Hallstein, W. (1962). United Europe: Challenge and opportunity. Harvard University Press.

Chicago Style (17th ed.) Citation

Hallstein, Walter. United Europe: Challenge and Opportunity. Cambridge: Harvard University Press, 1962.

MLA (9th ed.) Citation

Hallstein, Walter. United Europe: Challenge and Opportunity. Harvard University Press, 1962.

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