McMullan, K., & Alley, R. W. (2009). Pearl and Wagner: One funny day. Dial Books for Young Readers.
Lua i Stíl Chicago (17ú heag.)McMullan, Kate, agus R. W. Alley. Pearl and Wagner: One Funny Day. New York: Dial Books for Young Readers, 2009.
Lua MLA (8ú heag.)McMullan, Kate, agus R. W. Alley. Pearl and Wagner: One Funny Day. Dial Books for Young Readers, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.