Text ( visual ) : unmediated Murderer : a play in two acts / [by] Anthony Shaffer. -- : pbk. -- London ; Boston : Boyars , 1979. -- 96 p. ; 20 cm. -- ISBN 0714525456 ; (BA25091054) ; https://ci.nii.ac.jp/ncid/BA25091054 Author Heading(s): Shaffer, A. (Anthony). -- Classification(s): LCC : PR6069.H258 ; DC : 822/.9/14