Cita APA (7th ed.)

Jay, R. (1999). The seven deadly skills of communicating. International Thomson Business Press.

Cita Chicago (17th ed.)

Jay, Ros. The Seven Deadly Skills of Communicating. London: International Thomson Business Press, 1999.

Cita MLA (9th ed.)

Jay, Ros. The Seven Deadly Skills of Communicating. International Thomson Business Press, 1999.