This was one of the first books I read as a copywriter, it's a tremendous reference and because it's based on human nature, it's timeless. Cialdini's more rece

This was one of the first books I read as a copywriter, it's a tremendous reference and because it's based on human nature, it's timeless. Cialdini's more recent collaboration - Yes! - is also interesting, rehashes the basic principals, but then adds in some more current research, scenarios and applications.