Cita APA

Roth, C. (1960). The treasuray of sure fire selling. Prentice hall.

Chicago Edition Citation

Roth, Charles.B. The Treasuray of Sure Fire Selling. New Jersey: Prentice hall, 1960.

Cita MLA

Roth, Charles.B. The Treasuray of Sure Fire Selling. Prentice hall, 1960.

Atenció: Aquestes cites poden no estar 100% correctes.