Masheck, J., & Pincus-Witten, R. (1975). Al Held: Two Views / von Joseph Masheck and Robert Pincus-Witten. Artforum.
Lua i Stíl Chicago (17ú heag.)Masheck, Joseph, agus Robert Pincus-Witten. "Al Held: Two Views / Von Joseph Masheck and Robert Pincus-Witten." Artforum 1975.
Lua MLA (8ú heag.)Masheck, Joseph, agus Robert Pincus-Witten. "Al Held: Two Views / Von Joseph Masheck and Robert Pincus-Witten." Artforum, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.