Hartley, C. (2004). Lucian Freud: Etchings 1946-2004.
Lua i Stíl Chicago (17ú heag.)Hartley, Craig. Lucian Freud: Etchings 1946-2004. Edinburgh [u.a.], 2004.
Lua MLA (8ú heag.)Hartley, Craig. Lucian Freud: Etchings 1946-2004. 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.