Cita APA (7a ed.)

McMullan, K., & Alley, R. W. (2012). Pearl and Wagner: Five days till summer. Penguin Young Readers.

Cita Chicago Style (17a ed.)

McMullan, Kate, y R. W. Alley. Pearl and Wagner: Five Days Till Summer. New York: Penguin Young Readers, 2012.

Cita MLA (8a ed.)

McMullan, Kate, y R. W. Alley. Pearl and Wagner: Five Days Till Summer. Penguin Young Readers, 2012.