I am looking for the best research methods book or any other open source which involves choosing appropriate research methodologies and methods. I have IUATLD's "Research Methods for Promotion of Lung Health" and Creswell's "Research Design Qualitative, Quantitative, and Mixed Methods Approaches" books. I am trying to find up-to-date considerations in researches related to cardiopulmonary rehabilitation or physiotherapy and rehabilitation.

Does anyone have any recommendations?

Thanks.

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