Pop Flashback: These were the top ten hits this week in 1971
Top 100 Singles of 1971 in Canada | Canadian Music Blog
Billboard Hot 100 – Billboard
Top 100 R&B Song Chart for 1971
billboard charts on Twitter: "It's time for ROUND 2 of @billboard's #Hot100 Chart Championship📈 Vote for your favorite Year-End No. 1s in the thread below, and check out a recap of round
Groovy History - Billboard chart of the top 100 in 1971. #1 is "Joy To The World" by Three Dog Night. 🎶 | Facebook
Michael Jackson's 50 Top Songs on Billboard's Hot 100 – Billboard
Various Artists - Billboard: Top Soft Rock Hits 1971 - Amazon.com Music
Decline of key changes in popular music | FlowingData
Dave's Music Database: Billboard Hot 100: The Top 300+ Songs, 1958-2021
Chart: The Longest Hit Songs in U.S. History | Statista