Gaya APA

Calloway, J. (2007). Work like you're showing off : the joy, and kick of being better tomorrow than you were today (Cet. 1). United States of America: Simultane Ously.

Gaya MLA

Calloway, Joe. "Work like you're showing off : the joy, and kick of being better tomorrow than you were today". Cet. 1 United States of America: Simultane Ously, 2007. Text.