Etherington, B. (2007). Negotiation Skills for Virgins. Marshall Cavendish Limited.
Cita Chicago Style (17a ed.)Etherington, Bob. Negotiation Skills for Virgins. Marshall Cavendish Limited, 2007.
Cita MLA (8a ed.)Etherington, Bob. Negotiation Skills for Virgins. Marshall Cavendish Limited, 2007.
Precaución: Estas citas no son 100% exactas.