Borch GmbH & Frommer, H. (2017). Rome: Rome, Rome Centre, Vatican, Rome & region, Roman Forum : updated, durable, water-repellent, write-on/wipe-off surface = Roma = Rom (14th edition.). Borch.
Chicago-Zitierstil (17. Ausg.)Borch GmbH und H. Frommer. Rome: Rome, Rome Centre, Vatican, Rome & Region, Roman Forum : Updated, Durable, Water-repellent, Write-on/wipe-off Surface = Roma = Rom. 14th edition. [Hauzenberg]: Borch, 2017.
MLA-Zitierstil (9. Ausg.)Borch GmbH und H. Frommer. Rome: Rome, Rome Centre, Vatican, Rome & Region, Roman Forum : Updated, Durable, Water-repellent, Write-on/wipe-off Surface = Roma = Rom. 14th edition. Borch, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.