Cita APA (7a ed.)

Hiltrop, J., & Udall, S. (1995). The essence of negotiation. Prentice-Hall.

Cita Chicago Style (17a ed.)

Hiltrop, Jean-Marie, y Sheila Udall. The Essence of Negotiation. London [etc.]: Prentice-Hall, 1995.

Cita MLA (9a ed.)

Hiltrop, Jean-Marie, y Sheila Udall. The Essence of Negotiation. Prentice-Hall, 1995.