O'Donoghue, P & Ballantyne, A. (2006). The impact of speed of service in Grand Slam singles tennis. Journal of Sports Sciences, 24 (4), 345-346.
APA (7th ed.) CitationO'Donoghue, P., & Ballantyne, A. (2006). The impact of speed of service in Grand Slam singles tennis. Journal of Sports Sciences, 24(4), 345-346.
Chicago Style (17th ed.) CitationO'Donoghue, P., and A. Ballantyne. "The Impact of Speed of Service in Grand Slam Singles Tennis." Journal of Sports Sciences 24, no. 4 (2006): 345-346.
MLA (9th ed.) CitationO'Donoghue, P., and A. Ballantyne. "The Impact of Speed of Service in Grand Slam Singles Tennis." Journal of Sports Sciences, vol. 24, no. 4, 2006, pp. 345-346.
Warning: These citations may not always be 100% accurate.