Casta, A. (2012). The 4th call center olympics: From cubicles to combat zones. Gala.
Chicago-viite (17. p.)Casta, Airiz. "The 4th Call Center Olympics: From Cubicles to Combat Zones." Gala 2012.
MLA-viite (9. p.)Casta, Airiz. "The 4th Call Center Olympics: From Cubicles to Combat Zones." Gala, 2012.
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