I have three English language books which meet that description.
(1) Darrol Stinton's "Flying Qualities and Flight Testing of the Aeroplane"; Darrol was an ETPS instructor then a CAA test pilot, and it's clearly heavily based upon that work.
(2) ETPS FW Flight Test Handbook, a little hard to get hold of if you weren't there.
(3) FAA AC23-8, Flight Test Handook for normal, utility and aerobatic category aeroplanes. (AC90-89a, the FAA's homebuilt and ultralight book is also worth reading, but rather more "Janet and John"). Both these are downloadable from the FAA's website somewhere or other.
I'd certainly advocate that anybody in this game (who can work in English anyhow) should have Stinton and AC23-8 on the shelf.
G