Thompson, L., & Savage, S. (2004). Polar bear night. Scholastic Press.
Lua i Stíl Chicago (17ú heag.)Thompson, Lauren, agus Stephen Savage. Polar Bear Night. New York: Scholastic Press, 2004.
Lua MLA (8ú heag.)Thompson, Lauren, agus Stephen Savage. Polar Bear Night. Scholastic Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.