Sahl, M. (1976). Heartland. Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Sahl, Mort. Heartland. New York [u.a.]: Harcourt Brace Jovanovich, 1976.
Lua MLA (8ú heag.)Sahl, Mort. Heartland. Harcourt Brace Jovanovich, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.