Creswell, John W Designing and conducting mixed methods research / John W. Creswell, Vicki L. Plano Clark - 2nd ed - Los Angeles : Sage Publications, 2011 - 457 p : ill ISBN: 9781412975179 / 1560.00 Subjects--Topical Terms: Social sciences--Research--MethodologyResearch--Evaluation LC Class. No.: H62 / C923 D4 2011