The Little Green Books are SAGE's famous series - Quantitative Applications in the Social Sciences (QASS). For more than 30 years, the QASS series has been a cutting-edge resource for the latest quantitative techniques.
SAGE's Qualitative Research Methods series, or the Little Blue Books, is designed to teach novice researchers about specific modes of social inquiry, as well as widening the range of social science methods used by experienced researchers.
Sage Research Methods Online has the complete Little Green and Little Blue Books series. To access these ebooks, go to the SRM Homepage and select "Books & Reference".
Next, select the book series that correlates to your research.