Assessing academic English : testing English proficiency, 1950-1989 : the IELTS solution /
Alan Davies.
- Cambridge : Cambridge University Press, 2008.
- xiv, 456 p. : ill. ; 23 cm.
- Studies in language testing ; 23 .
Includes bibliographical references and index.
9780521542500 (alk. paper)
International English Language Testing System. English language--Study and teaching--Foreign speakers. English language--Ability testing.