I understand that most of us are looking for information about events or persons from the past, maybe motivations of their acts, causes or results of what they did.
We also have a "historiography" tag. The historiography is a science about studying the history. We do allow such questions. For example, my question "how do historians treat gossip?" was not closed and was quite well received.
What is wrong with asking for sources? This is also historiography. Some sources are good, some bad and for many people it is hard to distinguish.
(I understand that some questions present lack of own effort, and they should be closed as any other question)