The best way to avoid Plagiarism is to provide appropriate citation for sources.
In academic writing, proper citations generally use a style guide such as APA, MLA, or Chicago to name a few. The citation style used is up to the discretion of the Professor. Below is a list of the three most commonly used styles and courses in which they might be used.
https://libguides.asu.edu/c.php?g=263988&p=1762928
When deciding what to cite in order to avoid direct or indirect plagiarism, here are some guidelines to consider.
Common Knowledge is information your readers will know and accept without having to look it up.
Common Knowledge can change based on your audience.
https://guides.library.jhu.edu/avoidingplagiarism/common_knowledge
https://library.an.edu/c.php?g=571586&p=3940429