Humphrey, S. (2017, 10. July). How high can you jump? Zugriff unter http://www.athleticsnacac.org/wp-content/uploads/2016/09/PPX-High-Jump-Sue-Humphrey.pdf
APA (7th ed.) CitationHumphrey, S. (2017). How high can you jump?
Chicago Style (17th ed.) CitationHumphrey, S. How High Can You Jump? 2017.
MLA (9th ed.) CitationHumphrey, S. How High Can You Jump? 2017.
Warning: These citations may not always be 100% accurate.