Plagiarism is using the work of someone else without giving that person credit.
Most plagiarism is unintentional.
Some examples:
Note: You do not have to give credit for information that is common knowledge! (e.g. the boiling point of water)
How not to do it:
With citation management software you can:
Some options are EndNote, Zotero, and Mendeley. Here's how to use them:
*Choose the style "Vancouver (brackets, only year in date, no issue numbers)".