(2006). Leverage: How to get it and how to keep it in any negotiation / Roger Volkema.
Citazione stile Chigago Style (17a edizione)Leverage: How to Get It and How to Keep It in Any Negotiation / Roger Volkema. 2006.
Citatione MLA (9a ed.)Leverage: How to Get It and How to Keep It in Any Negotiation / Roger Volkema. 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.