Cita APA (7th ed.)

Kinney, J. (2015). Dairy of a wimpy kid: Hard Luck. Penguin Books.

Cita Chicago (17th ed.)

Kinney, Jeff. Dairy of a Wimpy Kid: Hard Luck. London: Penguin Books, 2015.

Cita MLA (9th ed.)

Kinney, Jeff. Dairy of a Wimpy Kid: Hard Luck. Penguin Books, 2015.