• https://www.sovereign-sports.co.uk/blog/atp-tennis-returns-to-eastbourne/

• https://www.itftennis.com/en/news-and-media/articles/history-of-tennis/

• https://www.britannica.com/sports/tennis

• https://en.wikipedia.org/wiki/Tennis_court

•https://www.usta.com/content/dam/usta/sections/pacificnorthwest/pdfs/play/leaguenew/ITFRuleswheader.pdf

• https://longislandtennismagazine.com/article/grand-slams-through-the-ages-thestory-behind-tennis-most-prestigious-tournaments

• https://www.nycracquetsports.com/nyc-racquet-sports-blog/grand-slamtournaments

• https://en.wikipedia.org/wiki/French_Open • https://en.wikipedia.org/wiki/Australian_Open

• https://en.wikipedia.org/wiki/US_Open_%28tennis%29

• https://en.wikipedia.org/wiki/Wimbledon_Championships

• https://pt.wikipedia.org/wiki/Ilie_N%C4%83stase

• https://www.britannica.com/biography/Rafael-Nadal

• https://www.britannica.com/biography/Roger-Federer

• https://en.wikipedia.org/wiki/Roger_Federer

• https://www.biography.com/athletes/rafael-nadal

• https://ro.wikipedia.org/wiki/Tenis_%C3%AEn_Rom%C3%A2nia

• https://historia.ro/sectiune/general/inceputurile-tenisului-in-romania-asociatia2257740.html

• https://en.wikipedia.org/wiki/Carlos_Alcaraz

• https://en.wikipedia.org/wiki/Novak_Djokovic