Style de citation APA

Roger Fisher William Ury. (2011). Getting To Yes (III.). Penguin Books.

Style de citation Chicago

Roger Fisher William Ury. Getting To Yes. III. USA: Penguin Books, 2011.

Style de citation MLA

Roger Fisher William Ury. Getting To Yes. III. Penguin Books, 2011.

Attention : ces citations peuvent ne pas être correctes à 100%.