Okezone (2021-06-30). [sports.okezone.com/read/2021/06/30/40/2433442/mundur-dari-wimbledon-2021-dengan-isak-tangis-serena-williams-sampaikan-pesan-emosional "Mundur dari Wimbledon 2021 dengan Isak Tangis, Serena Williams Sampaikan Pesan Emosional : Okezone Sports"] Periksa nilai |url= (bantuan). https://sports.okezone.com/. Diakses tanggal 2021-07-21.Hapus pranala luar di parameter |website= (bantuan)
"About Serena - Serena Williams". web.archive.org. 2016-11-07. Archived from the original on 2016-11-07. Diakses tanggal 2021-07-03.Pemeliharaan CS1: Url tak layak (link)
"Venus and Serena against the world". web.archive.org. 2017-09-03. Archived from the original on 2017-09-03. Diakses tanggal 2021-07-03.Pemeliharaan CS1: Url tak layak (link)
"Head 2 Head | WTA Tennis English". web.archive.org. 2017-01-29. Archived from the original on 2017-01-29. Diakses tanggal 2021-07-03.Pemeliharaan CS1: Url tak layak (link)
"News | OnTennis.com". web.archive.org. 2017-07-01. Archived from the original on 2017-07-01. Diakses tanggal 2021-07-03.Pemeliharaan CS1: Url tak layak (link)
"williams". web.archive.org. 2009-04-28. Archived from the original on 2009-04-28. Diakses tanggal 2021-07-03.Pemeliharaan CS1: Url tak layak (link)
"Individual News Story ::Tennis Channel". web.archive.org. 2011-07-16. Archived from the original on 2011-07-16. Diakses tanggal 2021-07-05.Pemeliharaan CS1: Url tak layak (link)
"Williams is lost cause - Times Online". web.archive.org. 2008-08-21. Archived from the original on 2008-08-21. Diakses tanggal 2021-07-05.Pemeliharaan CS1: Url tak layak (link)
"News | WTA Tennis English". web.archive.org. 2013-09-04. Archived from the original on 2013-09-04. Diakses tanggal 2021-07-21.Pemeliharaan CS1: Url tak layak (link)
"Head 2 Head | WTA Tennis English". web.archive.org. 2015-09-11. Archived from the original on 2015-09-11. Diakses tanggal 2021-07-21.Pemeliharaan CS1: Url tak layak (link)
"Head 2 Head | WTA Tennis English". web.archive.org. 2016-10-31. Archived from the original on 2016-10-31. Diakses tanggal 2021-07-21.Pemeliharaan CS1: Url tak layak (link)
"Head 2 Head | WTA Tennis English". web.archive.org. 2015-08-26. Archived from the original on 2015-08-26. Diakses tanggal 2021-07-21.Pemeliharaan CS1: Url tak layak (link)
"USTA Tennis Rules". web.archive.org. 2011-09-30. Archived from the original on 2011-09-30. Diakses tanggal 2021-07-21.Pemeliharaan CS1: Url tak layak (link)