(1999). Birds of Europe / text by Lars Svensson and Peter J. Grant ; illustrations by Killian Mullarney and Dan Zetterstrom ; translated by David Christie.
Chicago-referens (17:e uppl.)Birds of Europe / Text by Lars Svensson and Peter J. Grant ; Illustrations by Killian Mullarney and Dan Zetterstrom ; Translated by David Christie. 1999.
MLA-referens (9:e uppl.)Birds of Europe / Text by Lars Svensson and Peter J. Grant ; Illustrations by Killian Mullarney and Dan Zetterstrom ; Translated by David Christie. 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.