engineer Aubry Delaine
engineer Clint Gibbs
engineer Fareed Salamah
engineer Mike Foster
engineer [assistant engineer] Cameron Montgomery
engineer [assistant engineer] Irene Richter
engineer [assistant engineer] Jon Schacter
engineer [assistant engineer] Rachael Findlen
engineer [assistant engineer] Sean Buchanan
engineer [assistant engineer] Todd Bergman
mixed by John Hanes
mixed by Serban Ghenea
producer DJ Cirkut
producer Dr. Luke
written-by Brandon Dickinson
written-by Henry Walter
written-by Jordan Houston
written-by Lukasz Gottwald
written-by Onika Maraj
written-by Theron Thomas
written-by Timothy Thomas
Phonographic Copyright (p) Kemosabe Records
Phonographic Copyright (p) Columbia Records
Record Company Sony Music Entertainment
(P) 2014 Kemosabe Records/Columbia Records, a Division of Sony Music Entertainment