Marks, Tony. 20:20 project management how to deliver on time, on budget and on spec / [electronic resource] : Tony Marks. - London ; Philadelphia : Kogan Page, c2012. - viii, 307 p. : ill. ; 24 cm. ISBN: 9780749466084 9780749466091 Subjects--Topical Terms: Project management. LC Class. No.: HD69.P75 / M3675 2012 Dewey Class. No.: 658.4/04