Ash, L. (1978). Subject collections: A guide to special book collections and subject emphases as reported by university, college, public and special libraries and museums in the United States and Canada (5th ed., reviseds Eularge / complied by Lee Ash.). New York: R.R. Rowker.

Ash, Lee. Subject Collections: A Guide to Special Book Collections and Subject Emphases As Reported By University, College, Public and Special Libraries and Museums in the United States and Canada. 5th ed., reviseds Eularge / complied by Lee Ash. New York: R.R. Rowker, 1978.

Ash, Lee. Subject Collections: A Guide to Special Book Collections and Subject Emphases As Reported By University, College, Public and Special Libraries and Museums in the United States and Canada. 5th ed., reviseds Eularge / complied by Lee Ash. New York: R.R. Rowker, 1978.