Spyri, J. (2012). Heidi. New Central Book Agency.
Lua i Stíl Chicago (17ú heag.)Spyri, Johanna. Heidi. Kolkata: New Central Book Agency, 2012.
Lua MLA (9ú heag.)Spyri, Johanna. Heidi. New Central Book Agency, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.