Helgerud, J, Engen, L. C., Wisloff, U & Hoff, J. (2001, 05. November). Aerobic endurance training improves soccer performance. Zugriff unter http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11689745&dopt=Abstract
APA (7th ed.) CitationHelgerud, J., Engen, L. C., Wisloff, U., & Hoff, J. (2001). Aerobic endurance training improves soccer performance. Medicine & Science in Sports & Exercise, 33(11), 1925-1931.
Chicago Style (17th ed.) CitationHelgerud, J., L. C. Engen, U. Wisloff, and J. Hoff. "Aerobic Endurance Training Improves Soccer Performance." Medicine & Science in Sports & Exercise 33, no. 11 (2001): 1925-1931.
MLA (9th ed.) CitationHelgerud, J., et al. "Aerobic Endurance Training Improves Soccer Performance." Medicine & Science in Sports & Exercise, vol. 33, no. 11, 2001, pp. 1925-1931.