APA
Shell G Richard,, . (2006). Bargaining for advantage : Negotiation strategies for reasonable people. London: Penguin Books.
Chicago
Shell G Richard,, . 2006. Bargaining for advantage : Negotiation strategies for reasonable people. London: Penguin Books.
Harvard
Shell G Richard,, . (2006). Bargaining for advantage : Negotiation strategies for reasonable people. London: Penguin Books.
MLA
Shell G Richard,, . Bargaining for advantage : Negotiation strategies for reasonable people. London: Penguin Books. 2006.