You use a paraphrase when you want to preserve the meaning of the original text without copying the text verbatim (see quotation).
A paraphrase is representing the ideas of others in one's own words.
A paraphrase is announced or followed by a narrative or parenthetical citation to the original work.
If you do not name the author(s) in the text then the citation after the paraphrase will appear as follows:
If you cite the author(s) in the text, it is not necessary to repeat the name(s) in the parentheses. The source reference will look like this:
To support an argument or hypothesis, you can refer to several publications at once.
In this case, the authors are arranged alphabetically and separated by a semicolon " ; "