1.
https://www.wsj.com/articles/the-return-on-investment-for-2021-super-bowl-ads-11613730600
2.
https://adage.com/SuperBowl2021Reviews
3.
https://www.adweek.com/brand-marketing/super-bowl-lv-ad-tracker-2021-commercials/
4.
https://www.businessinsider.com/best-worst-super-bowl-commercials-ads-2021-2
