When writing a report, essay or other academic text, you should always refer to your sources in a standardized way.
Criticism of the sources refers to the attempt to establish the sources used by the author and/or redactor of a final text.
Plagiarism means claiming or implying original authorship of someone else's written or creative work, in whole or in part, into one's own without adequate acknowledgement.
Academic writing means confronting issues of copyright law. Here you will find questions and answers on that matter.
You can receive support and guidance to help you develop your language skills in an academic setting.