W. Lawrence Neuman , "Social Research Methods: Qualitative and Quantitative Approaches, 7th Edition" English | 2013 | ISBN: 1292020237 | 599 pages | PDF | 5.2 MB
An Introduction to Qualitative Research Synthesis: Managing the Information Explosion in Social Science Research By Claire Howell Major, Maggi Savin-Baden 2010 | 200 Pages | ISBN: 0415562856 | PDF | 2 MB