1) Docs for Developers: An Engineer’s Field Guide to Technical Writing
https://link.springer.com/book/10.1007/978-1-4842-7217-6
2) Requirements Writing for System Engineering:
https://link.springer.com/book/10.1007/978-1-4842-2099-3
Currently there are 50% off until 29th August for selected books for back to school discount offering.