Please attribute as: "Wikipedia / Tobias Klenze" (user page link optional). Remember that you must also mention the license (and link to it). So for example, if this picture is licensed under CC-BY-SA 4.0, the following is correct: Image: Wikipedia / Tobias Klenze / CC-BY-SA 4.0. The license must be a link! / CC BY-SA 4.0 / Wikimedia Commons
