Berenstain, J., & Berenstain, M. (2007). Trim the tree. Harper Festival.
Lua i Stíl Chicago (17ú heag.)Berenstain, Jan, agus Mike Berenstain. Trim the Tree. New York: Harper Festival, 2007.
Lua MLA (8ú heag.)Berenstain, Jan, agus Mike Berenstain. Trim the Tree. Harper Festival, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.