APA-referens (7:e uppl.)

Lee, A. (2005). The Lord of the rings sketchbook. Houghton Mifflin.

Chicago-referens (17:e uppl.)

Lee, Alan. The Lord of the Rings Sketchbook. Boston: Houghton Mifflin, 2005.

MLA-referens (8:e uppl.)

Lee, Alan. The Lord of the Rings Sketchbook. Houghton Mifflin, 2005.