E.A.J. Honigmann and William Shakespeare and T.J.B. Spencer and Michael Taylor — Richard III

Penguin Classics 1981 Paperback, 256pp. Part of The New Penguin Shakespeare series, this text looks at King Richard III with an introduction, a list of further reading, commentary and a short account of the textual problems of the play. The series is used and recommended by the Royal Shakespeare Company. (ISBN: 9780140707120). Good.