@book{frank ormond_gwyn_1998, title={Golf the fundamentals}, publisher={Dubuque, Iowa: Kendall/Hunt}, author={Frank Ormond, Charles Patch and Gwyn, Robert G.}, year={1998} }
 @book{ormond_patch_gwyn_1998, title={Golf: The fundamentals}, ISBN={0787247065}, publisher={Dubuque, Iowa: Kendall/Hunt}, author={Ormond, F. and Patch, C. and Gwyn, R. G.}, year={1998} }