Frommer, H. (2016). Barcelona: Barcelona Centre, Royal Palace, Parc Güell, old town, Barcelona & region : updated - durable - water-repellent - write-on/wipe-off surface (14th edition.). Borch GmbH.
Chicago-Zitierstil (17. Ausg.)Frommer, H. Barcelona: Barcelona Centre, Royal Palace, Parc Güell, Old Town, Barcelona & Region : Updated - Durable - Water-repellent - Write-on/wipe-off Surface. 14th edition. [Hauzenberg]: Borch GmbH, 2016.
MLA-Zitierstil (9. Ausg.)Frommer, H. Barcelona: Barcelona Centre, Royal Palace, Parc Güell, Old Town, Barcelona & Region : Updated - Durable - Water-repellent - Write-on/wipe-off Surface. 14th edition. Borch GmbH, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.