1.
- Publisher's international ISBN directory 2, Numerical ISBN Section 1992/93 / edit. Walter Ederer. - 19th ed. - München - Berlin - New York : Saur : International ISBN Agency : Bowker, 1992 - s. 1705-3371(Handbook of international documentation and information; vol. 7) ISBN 3-598-21601-7 [1, currently available 1]
- Chapters, articles