The New Oxford Shakespeare: Authorship Companion by Gary Taylor (English) HC
A nice touch in this textbook is the list of key people and their contributions.
The New Oxford Shakespeare: Authorship Companion by Gary Taylor (English) Hardco
It presents in full the evidence behind the choices made in The Complete Works about which works Shakespeare wrote, in whole or part. We now know that Shakespeare collaborated with his literary and dramatic contemporaries and that others adapted his works before they reached printed publication.