[Katy Perry, success in Bologna for the only Italian date. SETLIST]. Rockol.it. 2018-06-03 [2018-06-04]. (原始内容存档于2018-07-18) (意大利语). Dianne Bourne. Katy
Coldplay, Miley Cyrus. CNN. 2017-05-30 [2017-05-31]. (原始内容存档于2017-05-30). Bourne, Dianne. Black Eyed Peas join line-up for Ariana Grande One Love Manchester