Cita APA (7a ed.)

Mayer, M., Dyer, J., & Krauss, R. (2007). Little Critter: I Am Helping (1st board book ed.). HarperFestival.

Cita Chicago Style (17a ed.)

Mayer, Mercer, Jane Dyer, y Ruth Krauss. Little Critter: I Am Helping. 1st board book ed. New York: HarperFestival, 2007.

Cita MLA (8a ed.)

Mayer, Mercer, et al. Little Critter: I Am Helping. 1st board book ed. HarperFestival, 2007.