Ballard, T., & Kopel, D. (2018). John Akomfrah: Signs of empire / New Museum ; edited by Thea Ballard with Dana Kopel (First published.). New Museum.

Ballard, Thea, and Dana Kopel. John Akomfrah: Signs of Empire / New Museum ; Edited by Thea Ballard with Dana Kopel. First published. New York: New Museum, 2018.

Ballard, Thea, and Dana Kopel. John Akomfrah: Signs of Empire / New Museum ; Edited by Thea Ballard with Dana Kopel. First published. New Museum, 2018.