book recommendations?

hi guys! i’m sorry if this has been asked recently but i recently watched a newer documentary on Bob Lazar on Amazon Prime, and truthfully all i am thinking about is UFOs or anything of that nature. i was very into UFOs with my dad growing up and while i still love the unknown i haven’t even read or watched anything about the topic since middle school and i am now 28. so if there are any reading material that is an absolute necessity for the topic of UFOs, i would absolutely love to pick them...