APA aipamena

John Grogan. (2011). Marley: Messy Dog (I Can Read Level 2) (Reprint.). HarperCollins.

Chicago Style aipamena

John Grogan. Marley: Messy Dog (I Can Read Level 2). Reprint. HarperCollins, 2011.

MLA aipamena

John Grogan. Marley: Messy Dog (I Can Read Level 2). Reprint. HarperCollins, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.