Plano Clarck, Vicki L. Understanding research : a consumer's guide V.L. Plano Clarck, John W. Creswell - Upper Saddle River, NJ Merril / Pearson c2010. - xix, 388p. : ill. 28 cm. ISBN: 9780131583894 Subjects--Uniform Titles: Research --Methodology LC Class. No.: RNF Q 180.55 M48 P43 2010