I am trying to learn about non-response/dropout bias—and how to correct for it. I do not know this area well. Is it on-topic to ask for authoritative/canonical/highly-cited/classic references on this issue?

I feel as if this is not necessarily a matter of opinion, which would make it off-topic. For example, I would recommend Elements of Statistical Learning to someone who wants an introduction to machine learning. I would recommend Cohen, Cohen, West, & Aiken for someone interested in learning multiple regression. I know popular review papers on power, p-hacking, median splits, etc., to recommend if people are interested in those topics. These aren't necessarily opinion, as many of them are the "classics" that people always talk about.

**Can I ask for good references on a topic I am unfamiliar with?**