Schwager, Edie. Better vocabulary in 30 minutes a day / Better vocabulary in thirty minutes a day. Edie Schwager. - Petaling Jaya : Advantage Quest Publications, 2011. - 189 p. ; 22 cm. - Better English series. . - Better English series. . ISBN: 9789833832347 (pbk.) RM24.90 Subjects--Topical Terms: Vocabulary.