@book{
title = {Publisher's international ISBN directory},
author = {},
editor = {International ISBN agency},
editor = {Annuale },
editor = {Inizia nel 1989 },
editor = {Continuazione di: Publishers' international directory with ISBN index },
editor = {Decrizione basata su: 26th ed. (1999/2000) },
year = {2uuu},
address = {München [etc.]},
publisher = {Saur},
}