Sinclair, Barbara. Activate your English : intermediate self-study workbook / Subtitle on cover: Short course for adults Barbara Sinclair, Philip Prowse. - Cambridge : Cambridge University Press, 1996. - 50 p. : ill., 1 map ; 30 cm. ISBN: 0521484197 (pbk) 0521484197 LCCN: 97156135 Nat. Bib. No.: GB97-28076 Subjects--Topical Terms: English language--Textbooks for foreign speakers. LC Class. No.: PE1128 / .S56 1996 Dewey Class. No.: 425 / SIA 1996