Borch GmbH & Frommer, H. (2018). San Francisco: San Francisco Downtown, Alcatraz Island, Golden Gate Park, San Francisco Bay Area, San Francisco & region : updated - durable - water-repellent - write-on/wipe-off surface (17th edition.). Borch.
Chicago-Zitierstil (17. Ausg.)Borch GmbH und H. Frommer. San Francisco: San Francisco Downtown, Alcatraz Island, Golden Gate Park, San Francisco Bay Area, San Francisco & Region : Updated - Durable - Water-repellent - Write-on/wipe-off Surface. 17th edition. [Hauzenberg]: Borch, 2018.
MLA-Zitierstil (9. Ausg.)Borch GmbH und H. Frommer. San Francisco: San Francisco Downtown, Alcatraz Island, Golden Gate Park, San Francisco Bay Area, San Francisco & Region : Updated - Durable - Water-repellent - Write-on/wipe-off Surface. 17th edition. Borch, 2018.