with ChristinaAguilera. Phones Review. Marksway Ltd. 2006-03-06 [2013-05-03]. (原始内容存档于2006-10-13). ChristinaAguilera Back to Basics Tour Concert Review
United Kingdom: RCA Records. October 12, 2004. Evan, Chris. Concert Review: ChristinaAguilera – Back to Basics Tour. Blogcritics(英语:Blogcritics). March
Exclusive: Christina Grimmie On Her AMA Award And Her Idol ChristinaAguilera. Cambio. 2011-11-21 [2016-07-05]. (原始内容存档于2017-06-24). Christina Grimmie Performs