Cita APA (7th ed.)

HILTROP J M. (1997). ESSENCE OF NEGOTIATION. PRENTICE -HALL INTERNATIONAL; INC.

Cita Chicago (17th ed.)

HILTROP J M. ESSENCE OF NEGOTIATION. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.

Cita MLA (9th ed.)

HILTROP J M. ESSENCE OF NEGOTIATION. PRENTICE -HALL INTERNATIONAL; INC, 1997.