Is this plagiarizing?

It's not plagiarizing as long as you cite the source in a bibliography, and depending on the style of the doent (MLA, Chicago, etc.) you may have to cite the author and/or page number in parenthesis in the doent at the end of the sentence containing the quotation. I saw that another answer said that it's not plagiarizing as long as you reword the sentence: this is not true; you may maintain the exact sentence or you may paraphrase as long as you cite the source.