Is taking a method explanation from books and papers considered plagiarism? I have been reading a few Q/A about plagiarism, but I still have a doubt about the use of books and papers to explain the method I am applying in my thesis. 

I mixed up the infos I found in a book and in a paper to explain the method (because some parts where better explained in the book and some others in the paper), of course I cited them at the beginning and I put them in the bibliography. Is this considered plagiarism since I am not using "my words" to explain it?

EDIT to be clearer: I am not doing copying and paste: I am following the same flow of ideas to present the method, some parts where omitted in the paper, therefore I had to rely on the book to take care of every aspect

And at the beginning I wrote:"the method is fully explained here [1][2] and it is here reported for completeness
If you are using somebody else's words, you need to make this fact clear and explicit via quotation/block quotation; to do otherwise is clearly plagiarism, even if you are splicing together multiple different sources into some sort of Frankenparagraph.  

If you are making a complex remix of two sources, proper quotation may feel very choppy and incoherent, however, so you are probably better off paraphrasing into your own words instead.