求英文书籍(每本20个论坛币）多谢各位了！

每本20个论坛币，多谢各位！

1.Blending qualitative & quantitative research methods in theses and dissertations

By:Robert Murray Thomas

http://www.sagepub.com/books/Book226072

2.Research Design:Qualitative,Quantitative and Mixed Method Approachs

By:John W.Creswell

http://www.sagepub.com/books/Book232401

3.Qualitative Research Design:An Interactive Approach

By:Joseph A Maxwell

http://www.uk.sagepub.com/books/Book226671

4.Case Study Research:Design and Methods

By:Robert K Yin

http://www.sagepub.com/books/Book232182