John Grogan. (2012). Marley: Firehouse Dog (I Can Read Level 2). HarperCollins.
Chicago Style (17th ed.) CitationJohn Grogan. Marley: Firehouse Dog (I Can Read Level 2). HarperCollins, 2012.
MLA (9th ed.) CitationJohn Grogan. Marley: Firehouse Dog (I Can Read Level 2). HarperCollins, 2012.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.