https://ingorohlfing.wordpress.com/2012/04/04/comparative-politics-and-the-choice-of-methods/
This is a blog post on comparative politics and the choice of methods, written by Prof. Ingo Rohlfing.
https://libguides.usc.edu/writingguide/casestudy
A guide from the University of Southern California Library on writing case studies, including questions to consider during case selection, key points to cover when you write up your research, and common problems in case study research to avoid or limit.
http://www.e-ir.info/2013/05/09/evaluating-research-methods-of-comparative-politics/
This student essay titled ‘Evaluating Research Methods of Comparative Politics’, published on E-IR, evaluate the research design of three comparative studies: Putnam’s Making Democracy Work, Linz’s ‘The Perils of Presidentialism’, and Amorim Neto and Cox’s ‘Electoral Institutions, Cleavage Structures, and the Number of Parties’.
http://www.nova.edu/ssss/QR/QR3-3/tellis2.html
This site gives a comprehensive academic discussion on case study method. It is particularly useful since it summarizes numerous standpoints within the academic literature. It offers a detailed account on how to design and conduct case study research, introducing a number of tables, figures, and strategies.
https://www.youtube.com/watch?v=2TxtjMDpDgM
In this short video, Dr Wendy Olsen of the University of Manchester introduces Qualitative Comparative Analysis.
https://www.methods.manchester.ac.uk/themes/case-studies/fuzzy-set-analysis/
This useful set of slides explains fuzzy set analysis. It begins by introducing the topic, then moving on to the reasons why fuzzy sets are used in qualitative research, and the mode of logic associated with this method.
http://sru.soc.surrey.ac.uk/SRU13.html
This article from the University of Surrey discusses cross-national comparative research, including common problems and potential solutions.
A video lecture on comparative research and different approaches to case selection.