STEEL, CONCRETE, & COMPOSITE DESIGN OF TALL BUILDINGS
Bungale S. Taranath
2nd edition
Mc Graw Hill Companies, Inc., 1998
Chapter 10, Analysis techniques, and more. It is a book example of buildings and related structural calculation items.
I think there is a more recent reedition.
So in this book one would find how to tackle classically one core subject to lateral forces, torsional effects included. Then the Ghosh' books are more on the particularization and standardization of the calculations of shearwalls to meet codes current when edited.
Presently I would say most design of cores would start by modeling in some FEM program the core with plate element components, and so these difficulties about torsion effects are more easily dealt with, even if the programs are not yet entirely able to do with the eccentrical lateral loads automatically in general; but having tools to set diaphragms, finding center of masses, and placing the lateral loads at some arbitrary joint fixed to the diaphragm or adding some moment or pair (or set) of forces per floor one can deal with accidental torsion on a per hypothesis basis. For reinforcement, as always, refer to the mandate of the code, that is what Ghosh was doing from UBC and ACI.