@book{Creswell2011,
author = {Creswell, J.W. and Klassen, A.C. and Plano Clark, V.L. and Smith, K.C.},
title= {Best practices for mixed methods research in the health sciences},
year = {2011},
address = {Bethesda, MD},
publisher = {Office of Behavioral and Social Sciences Research (OBSSR), National Institutes of Health},
}