Cita APA (7a ed.)

Ury, W. (2007). The power of a positive No: How to say No and still get to Yes. Bantam Books.

Cita Chicago Style (17a ed.)

Ury, William. The Power of a Positive No: How to Say No and Still Get to Yes. New York: Bantam Books, 2007.

Cita MLA (9a ed.)

Ury, William. The Power of a Positive No: How to Say No and Still Get to Yes. Bantam Books, 2007.