Ash, L. 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 (4th ed., rev.).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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. 4th ed., rev.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)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. 4th ed., rev.
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