The following sources have been used as inspiration for the material on the website:

• www.freepik.com
• www.picjumbo.com
• www.iconfinder.com
• https://unsplash.com
• New English file Intermediate, Upper Intermediate and Advanced
• Headway Intermediate, Upper Intermediate and Advanced
• Cutting Edge Intermediate, Upper Intermediate and Advanced
• Business Result Intermediate, Upper Intermediate and Advanced
• Market Leader Intermediate, Upper Intermediate and Advanced
• Various Cambridge and Oxford Grammar books.