ISBN 978-0-201-02116-5. ↑ "Annotated Mythbusters: Episode 68: Christmas Tree Lights, Antigravity Device, Vodka Myths IV". kwc.org. Retrieved 11 April 2018. ↑ MythBusters Episode 68: Christmas Tree Lights, Antigravity Device, Vodka Myths IV "Mythbusters : Episode Guide : Discovery Channel". Archived from the original on 2008-11-09.