APA (7th ed.) Citation

Boyle, R. H. (1969). The Hudson River: A natural and unnatural history. Norton.

Chicago Style (17th ed.) Citation

Boyle, Robert H. The Hudson River: A Natural and Unnatural History. New York: Norton, 1969.

MLA (9th ed.) Citation

Boyle, Robert H. The Hudson River: A Natural and Unnatural History. Norton, 1969.

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