Publications
| 2013 Website | Wikipedia. Die freie Enzyklopädie (https://de.wikipedia.org), San Francisco: Wikimedia Foundation Inc., 2013 |
| 2013 Website | Wikipedia. The Free Encyclopedia (https://en.wikipedia.org), San Francisco: Wikimedia Foundation Inc., 2013 |
| 2013 Webpage | Daniel A. Werning and Wikipedia contributors, "Book of Caverns", version 564217763 (https://en.wikipedia.org/w/index.php?title=Book_of_Caverns&oldid=564217763), in: Wikipedia. The Free Encyclopedia |