[Image title]. [Website title]. [Date accessed]. [URL].
Examples:
* Portrait of Vincent van Gogh. Wikipedia. January 1, 2023. https://en.wikipedia.org/wiki/File:Vincent_Willem_van_Gogh_-_Self-Portrait_-_Google_Art_Project.jpg
* The Mona Lisa. Louvre Museum. January 1, 2023. https://www.louvre.fr/en/oeuvres/mona-lisa-leonard-de-vinci