Cleveland, D. B. , Cleveland, A. D. (1983). Introduction to indexing and abstracting. Libraries Unlimited, Littleton.

International encyclopedia of information and library science (1997). Ed. by John Feather and Paul Sturges. Routledge, London.

Koltay, T. (2010). Abstracts and abstracting. Oxford : Chandos Publishing.

Lancaster, F.W. (1998). Indexing and abstracting in theory and practice. London : Library Association Publishing