(1999, 04. June). Understanding intervals. Zugriff unter https://www.myonetwork.com/articles/basics-of-interval-training-60
APA (7th ed.) CitationUnderstanding intervals.
Chicago Style (17th ed.) CitationUnderstanding Intervals.
MLA (9th ed.) CitationUnderstanding Intervals.
Warning: These citations may not always be 100% accurate.