APA (7th ed.) Citation

Hansen, J. R. (2014). A difficult par: Robert Trent Jones Sr. and the making of modern golf. Gotham Books.

Chicago Style (17th ed.) Citation

Hansen, James R. A Difficult Par: Robert Trent Jones Sr. and the Making of Modern Golf. New York: Gotham Books, 2014.

MLA (8th ed.) Citation

Hansen, James R. A Difficult Par: Robert Trent Jones Sr. and the Making of Modern Golf. Gotham Books, 2014.

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