Heartney, E. (1997). Alan Sonfist: History and the Landscape / Text by Eleanor Heartney ; Organized by Stephen Prokopoff.
Lua i Stíl Chicago (17ú heag.)Heartney, Eleanor. Alan Sonfist: History and the Landscape / Text by Eleanor Heartney ; Organized by Stephen Prokopoff. Iowa City, 1997.
Lua MLA (8ú heag.)Heartney, Eleanor. Alan Sonfist: History and the Landscape / Text by Eleanor Heartney ; Organized by Stephen Prokopoff. 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.