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 Sisquoc Formation:

"

While most of the oil found in the Sisquoc Formation has gotten there by migrating upward from the underlying Monterey Formation, the primary source rock for petroleum in southwestern California, sometimes the Sisquoc is itself a source rock.[2] In places the formation contains enough organic carbon – up to six percent – to generate oil under the right conditions, such as burial in deep synclines with high enough temperature and sufficient time (several million years) to cause the kerogen from the decomposing organic matter to be matured, via hydrocarbon cracking, into petroleum.[3]