Cita APA (7th ed.)

GUPTA SUNIL. (2009). PERSUASIVE SELLING SKILLS. IDEAS MANAGEMENT CONSULTANTS.

Cita Chicago (17th ed.)

GUPTA SUNIL. PERSUASIVE SELLING SKILLS. INDIA: IDEAS MANAGEMENT CONSULTANTS, 2009.

Cita MLA (9th ed.)

GUPTA SUNIL. PERSUASIVE SELLING SKILLS. IDEAS MANAGEMENT CONSULTANTS, 2009.