This collection of papers examines the relationship between the teaching of language and the teaching of literature to non-native students. The book attempts to identify key theoretical issues and principles as a basis for further discussion.
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.
Michael Long's article is a great introduction to teaching literature to non-native students in particular. The articles (and introduction) written by Brumfit are well-written and especially useful to novices in the pedagogical stylistics field.