(1999, 19. January). Sleep high and train low with Colorado altitude training'. Zugriff unter http://www.altitudetraining.com/
APA (7th ed.) CitationSleep high and train low with Colorado altitude training'.
Chicago Style (17th ed.) CitationSleep High and Train Low with Colorado Altitude Training'.
MLA (9th ed.) CitationSleep High and Train Low with Colorado Altitude Training'.
Warning: These citations may not always be 100% accurate.