Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2011-12-10, 123 (45) [2011-11-30]. ISSN 0006-2510. (原始内容存档于2011-12-01).
Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2012-04-07, 124 (11) [2012-03-30]. ISSN 0006-2510. (原始内容存档于2012-03-31).
Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2011-12-10, 123 (45) [2011-11-30]. ISSN 0006-2510. (原始内容存档于2011-12-01).
Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2012-04-07, 124 (11) [2012-03-30]. ISSN 0006-2510. (原始内容存档于2012-03-31).
worldcat.org
Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2011-12-10, 123 (45) [2011-11-30]. ISSN 0006-2510. (原始内容存档于2011-12-01).
Billboard Boxscore. Billboard (New York City, New York: Prometheus Global Media). 2012-04-07, 124 (11) [2012-03-30]. ISSN 0006-2510. (原始内容存档于2012-03-31).