Ash, L., Calvert, S., & Miller, W. (1978). Subject collections: A guide to special book collections and subject emphases as reported by university, college, public, and special libraries in the United States and Canada (5th ed., rev. and enl.). Bowker.
Chicago-Zitierstil (17. Ausg.)Ash, Lee, Stephen Calvert, und William Miller. Subject Collections: A Guide to Special Book Collections and Subject Emphases as Reported by University, College, Public, and Special Libraries in the United States and Canada. 5th ed., rev. and enl. New York: Bowker, 1978.
MLA-Zitierstil (9. Ausg.)Ash, Lee, et al. Subject Collections: A Guide to Special Book Collections and Subject Emphases as Reported by University, College, Public, and Special Libraries in the United States and Canada. 5th ed., rev. and enl. Bowker, 1978.