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Persuasion and influence
Influence: Science and PracticeInfluence: Science and Practice by Robert B. Cialdini
Buy used from: £2.39
A classic on influence. Easy reading and identifies six much-referenced modes of influend.
The SPIN Selling Fieldbook: Practical Tools, Methods, Exercises and ResourcesThe SPIN Selling Fieldbook: Practical Tools, Methods, Exercises and Resources by Neil Rackham
Buy new: £8.98 / Used from: £1.81
A research-based classic on selling, especially to big companies and intelligent people. Shows how classic sales techniques are all wrong.
Motivational Interviewing: Preparing People for ChangeMotivational Interviewing: Preparing People for Change by William R. Miller
Buy new: £23.54 / Used from: £24.00
Not so well known, but a sound book. It's about therapy, by the way, but is applicable to many more situations.
The Psychology of Judgment and Decision Making (McGraw-Hill Series in Social Psychology)The Psychology of Judgment and Decision Making (McGraw-Hill Series in Social Psychology) by Scott Plous
Buy new: £36.19 / Used from: £20.00
All (well, most of) the theories on how we make decisions (mostly dysfunctionally) in a slim and readable volume.
Getting to Yes: Negotiating Agreement without Giving inGetting to Yes: Negotiating Agreement without Giving in by Roger Fisher
Buy used from: £0.03
The very readable classic on collaborative negotiating. Much referenced and copied.
Getting Past No: Negotiating with Difficult PeopleGetting Past No: Negotiating with Difficult People by William Ury
Buy new: £5.73 / Used from: £3.52
An equally good and readable sequel to 'Getting To Yes'.
Change: Principles of Problem Formation and Problem ResolutionChange: Principles of Problem Formation and Problem Resolution by P Watzlawick
Buy new: £11.66 / Used from: £4.18
One of the original books on brief therapy. Perhaps the first to describe reframing.
Persuasion, Social Influence and CompliancePersuasion, Social Influence and Compliance by Robert H. Gass
Buy used from: £0.54
Concise descriptions of much of the theory on persuasion.