The following sources were consulted in the preparation of the article “15 people who truly went out on top.”
- WTA World No.1 Ashleigh Barty announces retirement from professional tennis
- Rocky Marciano retires as world heavyweight champion
- Tina Turner promises unforgettable finale to the Tina Live tour in Sheffield
- Record audience tunes in to Carson’s final ‘Tonight Show’
- Syndication Ratings: ‘Oprah’ Goes Out on Top
- Cartoonist to Retire ‘Calvin and Hobbes’ Strip
- ‘Seinfeld’s’ Finale Ends Up in Sixth Place of All Time
- Grace Kelly and Prince Rainier of Monaco marry in “wedding of the century”
- The Estée Lauder Companies to Acquire the TOM FORD Brand
- Slimane And Saint Laurent: What Happened?
- Instagram says CEO Systrom, CTO Krieger resign
- Rio Olympics 2016: Michael Phelps bows out of Games with gold in men’s relay
- Rosberg announces his retirement from F1 racing