Berger, Arthur Asa . Media and communication research methods: an introduction to qualitative and quantitative approach / by Arthur Asa Berger. - 2nd ed. / - California : Sage Publications, Inc , 2011 - xvii, 341p : ISBN: 978-1-4129-8777-6 Subjects--Topical Terms: Mass media- Research- Methodology Dewey Class. No.: 4 / Q1