Wilkes, M. V. Time-sharing computer systems / M. V. Wilkes. - 3rd ed. - London : New York : Macdonald and Jane's ; American Elsevier, 1975. - 2, 166 p. : ill. ; 23 cm. Includes index. ISBN: 0444195254 (American Elsevier) : £3.25 LCCN: 74016911 LC Class. No.: QA76.53 .W54 1975 / .W54 1975 Dewey Class. No.: 001.6/44/04