You must provide citations for images, just as you do for words, quotes, and ideas. Even if you find the image through Google, you must click on the image and go to the original source for the image. Remember Google is NOT a website. Google is a search engine. To get to the original source, click on the image and then click "website for this image," usually on the upper right side of the screen.
Reference
Artist Surname, First Initial. Second Initial. (Year). Title of the
artwork [Format]. Retrieved from URL (web address)
Reference (No Author)
Title of work [Type of work]. (Year image was created).
Retrieved from URL (address of web site)
Reference (No Author, No Title, No Date)
Many images found on the Web fall under this category.
Try to locate the missing information by clicking on the image,
and/or looking at the bottom of the image.
Subject and [type of work]. Retrieved from URL
Human brain structure and function. [Digital image]. Retrieved from https://thealevelbiologist.co.uk/option-b-neurobiology-behviour/human-brain-structure-and-function/