Cita APA (7a ed.)

McBratney, S., & Eachus, J. (2000). I'm sorry (1st American ed.). HarperCollins Publishers.

Cita Chicago Style (17a ed.)

McBratney, Sam, y Jennifer Eachus. I'm Sorry. 1st American ed. [S.l.]: HarperCollins Publishers, 2000.

Cita MLA (8a ed.)

McBratney, Sam, y Jennifer Eachus. I'm Sorry. 1st American ed. HarperCollins Publishers, 2000.

Precaución: Estas citas no son 100% exactas.