O'Donoghue, P. G. (2001, 22. November). The most important points in grand slam singles tennis. Zugriff unter http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11393875&dopt=Abstract
APA (7th ed.) CitationO'Donoghue, P. G. (2001). The most important points in grand slam singles tennis. Research Quarterly for Exercise and Sport, 72(2), 125-131.
Chicago Style (17th ed.) CitationO'Donoghue, P. G. "The Most Important Points in Grand Slam Singles Tennis." Research Quarterly for Exercise and Sport 72, no. 2 (2001): 125-131.
MLA (9th ed.) CitationO'Donoghue, P. G. "The Most Important Points in Grand Slam Singles Tennis." Research Quarterly for Exercise and Sport, vol. 72, no. 2, 2001, pp. 125-131.
Warning: These citations may not always be 100% accurate.