In the database Ulrichsweb you can search for a journal to see if it contains peer reviewed articles.
Scientifically reviewed journals have the symbol Refereed in the database. Remember that the information peer reviewed or refereed refers to the journal and does not guarantee that all articles in the journal are scientific.
On this page you will find an introduction to the fundamentals of academic writing and writing references.
Plagiarism means presenting someone else's work as your own (a text, a chart, a program, a picture, etc.). Also so-called self-plagiarism is plagiarism.
Refero is an anti-plagiarism guide. It contains information on plagiarism and how to avoid it.