Cita APA (7th ed.)

John Grogan. (2012). Marley: Firehouse Dog (I Can Read Level 2). HarperCollins.

Cita Chicago (17th ed.)

John Grogan. Marley: Firehouse Dog (I Can Read Level 2). HarperCollins, 2012.

Cita MLA (9th ed.)

John Grogan. Marley: Firehouse Dog (I Can Read Level 2). HarperCollins, 2012.

Atenció: Aquestes cites poden no estar 100% correctes.