Checkland, Peter. Soft systems methodology in action / Peter Checkland, Jim Scholes. - Chichester, West Sussex, England ; New York : Wiley, c1990. - xv, 329 pages ; illustrations Includes bibliographical references (p. 317-322) and indexes. ISBN: 0471927686 : $37.00 LCCN: 90012193 Subjects--Topical Terms: System theory.System analysis. LC Class. No.: Q 295 / .C449 1990 Dewey Class. No.: 003