APA (7th ed.) Citation

Van Alstyne, R. W. (1960). The American empire: Its historical pattern and evolution. Routledge and Kegan Paul for the Historical Association.

Chicago Style (17th ed.) Citation

Van Alstyne, Richard Warner. The American Empire: Its Historical Pattern and Evolution. London: Routledge and Kegan Paul for the Historical Association, 1960.

MLA (8th ed.) Citation

Van Alstyne, Richard Warner. The American Empire: Its Historical Pattern and Evolution. Routledge and Kegan Paul for the Historical Association, 1960.