When sourcing images on the web (e.g. through ‘Google Images’), always look for information on copyright and permitted uses. Just because something on the Internet doesn't mean you can use it without permission. Contact the rights holder if you are unsure. For further information see:
Copyright and Related Rights Act (2000, Ireland),
To find out the origin of an image on the Internet try this:
Right click on the image
Copy the image address
Go to Google images
Click on the camera icon to Search by image
When including images in academic work, they should be numbered, and given a caption that identifies the artist, the title of the work (normally in italics), the date, medium, its present location (if known), its dimensions (if known): e.g. Masaccio, Madonna and Child, 1426, tempera on panel, London, National Gallery, 135.5 cm × 75 cm
Images for publication in an academic journal or book:
It is likely that the publisher will require images to be at least 300 DPI’s (dots-per-inch).
In ARTstor, images that are marked ‘IAP’ (Images for Academic Publishing) are suitable. However, before using an image, it is still necessary to get permission from the copyright holder. For non-IAP images you should request the copyright holder to send a publication-quality image for publication.