Cita APA (7th ed.)

Steele, P. T. (1989). It's a deal: A practical negotiation handbook. McGraw-Hill.

Cita Chicago (17th ed.)

Steele, Paul T. It's a Deal: A Practical Negotiation Handbook. London: McGraw-Hill, 1989.

Cita MLA (9th ed.)

Steele, Paul T. It's a Deal: A Practical Negotiation Handbook. McGraw-Hill, 1989.