^G. Richard Shell (2015). Bargaining for Advantage: Negotiation Strategies for Reasonable PeopleISBN 9780143036975 (revised Nov 2015)
^G. Richard ShellBargaining for Advantage : Negotiation Strategies for Reasonable People by G. Richard Shell (2006, Paperback, Revised)ISBN 9780143036975 (revised Feb 2015)
^Shell, G. Richard (Author) (2015). Bargaining for Advantage : Negotiation Strategies for Reasonable People, Penguin (Non-Classics). BiggerBooks. ISBN 9780143036975 (revised Jul 2023)
^PENGUIN USABargaining For Advantage - Negotiation Strategies For Reasonable People - 2 Ed., Penguin Usa. Amazon. ISBN 9780143036975 (revised Sep 2019)