Waterman, A. (2009). Hearing voices: Alex Waterman on Robert Ashley. Artforum.
Lua i Stíl Chicago (17ú heag.)Waterman, Alex. "Hearing Voices: Alex Waterman on Robert Ashley." Artforum 2009.
Lua MLA (8ú heag.)Waterman, Alex. "Hearing Voices: Alex Waterman on Robert Ashley." Artforum, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.