(2001, 13. June). Speed parachutes. Zugriff unter http://www.pponline.co.uk/encyc/0404.htm
APA (7th ed.) CitationSpeed parachutes.
Chicago Style (17th ed.) CitationSpeed Parachutes.
MLA (9th ed.) CitationSpeed Parachutes.
Warning: These citations may not always be 100% accurate.