Johnston, J., Rodis-Jamero, N., & Attias, D. (1980). The Empire strikes back sketchbook. Ballantine Books.
Chicago Style (17th ed.) CitationJohnston, Joe, Nilo Rodis-Jamero, and Diana Attias. The Empire Strikes Back Sketchbook. New York: Ballantine Books, 1980.
MLA (9th ed.) CitationJohnston, Joe, et al. The Empire Strikes Back Sketchbook. Ballantine Books, 1980.
Warning: These citations may not always be 100% accurate.