@misc{
title = {Piano sonatas op. 7, op. 10 no. 1, op. 10 no. 2},
author = {Beethoven, Ludwig : van},
editor = {Gulda, Friedrich},
editor = {998035220808896 - Ludwig van Beethoven - 46 -  },
editor = {Registrazione: Austria, 1967 },
year = {2008},
address = {Olanda},
publisher = {Brilliant classics},
}