Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Codex:

"

Among the experiments of earlier centuries, scrolls were sometimes unrolled horizontally, as a succession of columns. The Dead Sea Scrolls are a famous example of this format, and it is the standard format for Jewish Torah scrolls made to this day for ritual use. This made it possible to fold the scroll as an accordion. The next evolutionary step was to cut the folios and sew and glue them at their centers, making it easier to use the papyrus or vellum recto-verso as with a modern book.[citation needed]