Graphic Art
From Turabian Style Manual - Chicago Style Manual does not tell how to cite graphic art.
See examples below:
Notes-Bibliography Style
       1st Footnote or Endnote
           12. Toyota, "We See beyond Cars" (advertisement), Architectural Digest,  
       January 2010, 57.
       Bibliography
       Usually not cited in bibliography.
Author-Date Style
       1st Parenthetical Note
       (Toyota 2010, 57)
       Reference List
       Toyota, 2010, "We See beyond Cars" (advertisement). Architectural Digest,
           January, 57.