Make sure that you use a reference management tool at the START of your literature search.
When you are running your literature searches you can save the articles you identify to a reference manager tool. This way you will have a record of the articles you want to use.
When it comes to writing up your results you will be able to refer to your list of articles in order to create your reference list and bibliography.
Depending on the tool you use, you can use folders and / or tags to organise your references and may have “cite while you write” functionality.