Sobczak, A. (2013). Smart calling: Eliminate the fear, failure, and rejection from cold calling (2nd edition.). Wiley.
Cita Chicago Style (17a ed.)Sobczak, Art. Smart Calling: Eliminate the Fear, Failure, and Rejection from Cold Calling. 2nd edition. Hoboken: Wiley, 2013.
Cita MLA (8a ed.)Sobczak, Art. Smart Calling: Eliminate the Fear, Failure, and Rejection from Cold Calling. 2nd edition. Wiley, 2013.
Precaución: Estas citas no son 100% exactas.