Mayer, M., Dyer, J., & Krauss, R. (2007). Little Critter: I Am Helping (1st board book ed.). HarperFestival.
Lua i Stíl Chicago (17ú heag.)Mayer, Mercer, Jane Dyer, agus Ruth Krauss. Little Critter: I Am Helping. 1st board book ed. New York: HarperFestival, 2007.
Lua MLA (8ú heag.)Mayer, Mercer, et al. Little Critter: I Am Helping. 1st board book ed. HarperFestival, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.