Cita APA (7th ed.)

NAUDI SIMON. (2003). GENTLE ART OF FIRM PERSUASION. SPIRO PRESS.

Cita Chicago (17th ed.)

NAUDI SIMON. GENTLE ART OF FIRM PERSUASION. LONDON: SPIRO PRESS, 2003.

Cita MLA (9th ed.)

NAUDI SIMON. GENTLE ART OF FIRM PERSUASION. SPIRO PRESS, 2003.