Gaya APA

Goldner, P, S., Mckeon, P. (2007). RED-HOT SALES NRGOTIATION . Amerika: Amacom (American Management Association).

Gaya MLA

Goldner, Paul, S.., Mckeon, Peter. "RED-HOT SALES NRGOTIATION". Amerika: Amacom (American Management Association), 2007. Text.