This title includes the following Grammar presented through authentic international contexts, for students to analyze and formulate the rules; Focus on English for socializing, telephoning, and participating in discussions, enabling learners to communicate confidently in work-related situations; Recognizes adults as active, resourceful learners, with regular review units, Workbook, Student's Cassette and Audio CD; Integrated Pocket Book with grammar summaries, social phrases, and other key information for quick reference.
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.