Gershon Steven. Present Yourself 1 Experiences / Steven Gershon - 7th ed. - New York : Cambridge University Press, 2012. - 87 p. + 1 CD-ROM CD ประกอบ No. CD1129 ISBN: 9780521713283 Subjects--Topical Terms: ENGLISH LANGUAGE -- TEXTBOOKS FOR FOREIGN SPEAKERS LC Class. No.: PE1128 / G39P 2012