Gough, David Introduction to systematic reviews : / by David Gough, Sandy Oliver and James Thoms - 2nd. ed. - Los Angels : Sage , 2017 - xvi, 331p. ; 24cm. ISBN: 9781473929432 Subjects--Topical Terms: Research methodologySocial science-Research-Evaluation Dewey Class. No.: 001.4 / GOU-IN