Cornell, Paul, “The Magic Number: Why Witches Come in Threes,” TOR.com, http://www.tor.com/2015/08/20/the-magic-number-why-witches-come-in-threes/
Davisson, Zack, “Yuki Onna – The Snow Woman,”Hyakumonogatari Kaidankai, https://hyakumonogatari.com/2-13/12/18/yuki-onna-the-snow-woman/
Gannon, Megan, “A Bewitching History: Why Witches Ride Broomsticks,” 30 Oct. 2013, https://www.livescience.com/40828-why-witches-ride-broomsticks.html
Hocus Pocus, directed by Kenny Ortega, Walt Disney Pictures, 1993.
Kroll, David, “The Origin Of Witches Riding Broomsticks: Drugs From Nature, Plus Shakespeare,” Oct. 31, 2017, https://www.forbes.com/sites/davidkroll/2017/10/31/the-origin-of-witches-riding-broomsticks-drugs-from-nature-plus-shakespeare/#39bbeab861a9
“Why Do Witches Fly on Brooms?”, https://www.iflscience.com/health-and-medicine/why-do-witches-fly-brooms/
Villains 101 