Cita APA (7th ed.)

McFarland Keith R. (2008). The Breakthrough Company. Crown Publishers Group,Randam House Inc.

Cita Chicago (17th ed.)

McFarland Keith R. The Breakthrough Company. USA: Crown Publishers Group,Randam House Inc, 2008.

Cita MLA (9th ed.)

McFarland Keith R. The Breakthrough Company. Crown Publishers Group,Randam House Inc, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.