WORKING CLASS AUTONOMY AND THE CRISIS ITALIAN MARXIST TEXTS OF THE THEORY AND PRACTICE OF A CLASS MOVEMENT, 1964-79 1979 RED NOTES, CSE BOOKS PRINTED IN UNITED KINGDOM 4TO SOFT COVER
VG+ IOBA BOOK GRADING STANDARDS; Light Rubbing, Light Creasing and Light Age Toning to Front and Back Covers, Tight Sound Binding, Clean Complete Unmarked Text.
Various is the correct author for any book with multiple unknown authors, and is acceptable for books with multiple known authors, especially if not all are known or the list is very long (over 50).
If an editor is known, however, Various is not necessary. List the name of the editor as the primary author (with role "editor"). Contributing authors' names follow it.
Note: WorldCat is an excellent resource for finding author information and contents of anthologies.