"Rudolph the Red-Nosed Reindeer." St. James Encyclopedia of Popular Culture. Gale. 2000. Haettu 21.7.2016 palvelusta HighBeam Research (vaatii tilauksen): https://www.highbeam.com/doc/1G2-3409002138.html (Arkistoitu – Internet Archive)
"Rudolph the Red-Nosed Reindeer." St. James Encyclopedia of Popular Culture. Gale. 2000. Haettu 21.7.2016 palvelusta HighBeam Research (vaatii tilauksen): https://www.highbeam.com/doc/1G2-3409002138.html (Arkistoitu – Internet Archive)