Laura Ingalls Wilder. (1999). Sugar Snow (Little House Picture Book) (Revised ed.). HarperCollins.
Lua i Stíl Chicago (17ú heag.)Laura Ingalls Wilder. Sugar Snow (Little House Picture Book). Revised ed. HarperCollins, 1999.
Lua MLA (9ú heag.)Laura Ingalls Wilder. Sugar Snow (Little House Picture Book). Revised ed. HarperCollins, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.