For a photograph:
Start with the last name of the photographer, followed by a comma, then the photographer's first name and middle initial, then a period.
Smith, John P.
After one space, write the title of the photo and underline it, followed by another period.
After one space, write the day, month, and year that you saw the photo, followed by a period. Like this: 4 May 2008.There should be no commas in this section.
After one space, write the name of the collection, followed by a comma, then the name of the museum or location of the photo, followed by a comma, then the name of the city where the photo was located, followed by a period.
For example: Flower Collection, Metropolitan Museum of Art, New York.
If citing a painting, everything stays the same except for the date. Instead of listing the date on which you saw the painting, list the year the painting was created. Only the year is needed, not the full date.