Rogers, Everett M. Communication of innovations; : a cross-cultural approach [electronic resource] / [by] Everett M. Rogers with F. Floyd Shoemaker.. — 2d ed.. — New York, : Free Press, [1971]. — xix, 476 p. : illus. 24 cm.
First ed. (1962) and 3rd ed. (c1963) published under title: Diffusion of innovations.