Stummer, A. (2010). Christmas with the Vienna Boys´ Choir: A joyous live holiday performance by the world famous choir. Cobra Entertainment.
Chicago-referens (17:e uppl.)Stummer, Alfons. Christmas with the Vienna Boys´ Choir: A Joyous Live Holiday Performance by the World Famous Choir. Vienna: Cobra Entertainment, 2010.
MLA-referens (9:e uppl.)Stummer, Alfons. Christmas with the Vienna Boys´ Choir: A Joyous Live Holiday Performance by the World Famous Choir. Cobra Entertainment, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.