Answer :
In this research, the scientists have their own ways and techniques to find the answers they are looking for, and this makes all of their research valid in that point.
In particular bibliographic research, that develops trying to explain a problem through theories published in books or works of the same genre. The objective of this type of research is to know and analyze the main theoretical contributions on a given subject or problem, making it an indispensable tool for any research. You can use it for various purposes