Life Hack. https://www.lifehack.org/articles/communication/20-things-you-should-know-before-dating-social-butterfly.html
diakses 21 Mei 2020WebMD. https://www.webmd.com/balance/news/20131112/brain-differences-seen-in-social-butterflies#1
diakses 21 Mei 2020Live Science. https://www.livescience.com/35034-depression-symptoms-less-obvious-extroverted-people.html
diakses 21 Mei 2020