I asked a similar question the other day about plagiarism, but I have a slightly different case. Would you consider this plagiarism?
A source paper (Y) has text which refers to A and B and C. Another author, X, copies a few sentences almost verbatim (a sentence of 20 or so words) and refers to it as (A, B, and Y).
So in Y, we have: Sentence 1 (A and B). Sentence 2 (C).
This is reproduced by X as: Sentence 1 (A, B, and Y). Sentence 2 (C and Y).
Is this plagiarism?