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The Billboard Book of Top 40 Hits, 9th Edition: Complete Chart Information about America's Most Popular Songs and Artists, 1955-2009' - Fort Myers Florida Weekly
11 Asian acts who broke into the Billboard Hot 100: BTS, CL, PSY,
V.A.-Billboard Top 100 Songs 2009 | Gigabeat
Top 100 Country Song Chart for 2009
Billboard Hot 100 Charts: The 2000s - Record Research
CHARTS: White People Are No Longer Relevant in Pop Music, in Terms of Sales
Artists' Spotify criticisms point to larger ways musicians lose with streaming — here's 3 changes to help in Canada
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Drake Has Been on the Billboard Hot 100 Chart for Eight Years Straight - XXL
BTS makes Billboard history with 'Savage Love (Laxed – Siren Beat)' - YP | South China Morning Post
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Billboard Top 100 of 2009 - playlist by Gary Li | Spotify
Labour markets for musicians, Barriers to foreign market entry for artists, The value of music awards - The Music Export Business
Mix it Up - Clue Alert! #2 The Headliner had a billboard top 100 song in 2009 2012 and 2013! Guess away! | Facebook
Boneyard Media » Blog Archive » Personal Notes on Billboard's 2009 Top 100
Billboard Magazine: September 26, 2009. | eBay
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