Cita APA (7th ed.)

Hargreaves, A., & Hargreaves, R. (2018). Dr. Thirteenth (Limited edition.). Penguin Young Readers Licenses, an imprint of Penguin Random House LLC.

Cita Chicago (17th ed.)

Hargreaves, Adam, i Roger Hargreaves. Dr. Thirteenth. Limited edition. New York, New York: Penguin Young Readers Licenses, an imprint of Penguin Random House LLC, 2018.

Cita MLA (9th ed.)

Hargreaves, Adam, i Roger Hargreaves. Dr. Thirteenth. Limited edition. Penguin Young Readers Licenses, an imprint of Penguin Random House LLC, 2018.