Livingstone, M. (1999). David Hockney: Space & Line ; Grand Canyon Pastels on Paper 1998 & Works von Paper 1966 - 1994. Annely Juda Fine Art [u.a.].
Lua i Stíl Chicago (17ú heag.)Livingstone, Marco. David Hockney: Space & Line ; Grand Canyon Pastels on Paper 1998 & Works Von Paper 1966 - 1994. London: Annely Juda Fine Art [u.a.], 1999.
Lua MLA (8ú heag.)Livingstone, Marco. David Hockney: Space & Line ; Grand Canyon Pastels on Paper 1998 & Works Von Paper 1966 - 1994. Annely Juda Fine Art [u.a.], 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.