Shull, Fremont A. Organizational decision making / Fremont A. Shull, Jr., Andr�e L. Delbecq, L. L. Cummings. - New York : McGraw-Hill, 1970. - xvi, 320 p. : ill. - McGraw-Hill series in management. . ISBN: 0070571821 LCCN: 76119829