Borch GmbH & Frommer, H. (2018). Chicago: Chicago Downtown, Lincoln Park, Hyde Park, Chicago & region, O'Hare Airport : updated, durable, water repellent, write-on/wipe-off surface (10th edition.). Borch.
Chicago-Zitierstil (17. Ausg.)Borch GmbH und H. Frommer. Chicago: Chicago Downtown, Lincoln Park, Hyde Park, Chicago & Region, O'Hare Airport : Updated, Durable, Water Repellent, Write-on/wipe-off Surface. 10th edition. [Hauzenberg]: Borch, 2018.
MLA-Zitierstil (9. Ausg.)Borch GmbH und H. Frommer. Chicago: Chicago Downtown, Lincoln Park, Hyde Park, Chicago & Region, O'Hare Airport : Updated, Durable, Water Repellent, Write-on/wipe-off Surface. 10th edition. Borch, 2018.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.