Heydon, John Dyson. Evidence : cases and materials / J.D.Heydon, Mark Ockelton. - 4th ed. - London : Butterworths, 1996. - xxxviii, 520 p. ; 23 cm. Includes bibliographical references and index. ISBN: 0406081808 Subjects--Topical Terms: Evidence (Law)--Great Britain. Dewey Class. No.: 347.4106