Hill, E. Spot's First Christmas Board Book. Putnam Publishing Group.
Lua i Stíl Chicago (17ú heag.)Hill, Eric. Spot's First Christmas Board Book. Putnam Publishing Group.
Lua MLA (8ú heag.)Hill, Eric. Spot's First Christmas Board Book. Putnam Publishing Group.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.