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 Pistacia lentiscus:

"

The resin is collected by bleeding the trees from small cuts made in the bark of the main branches, and allowing the sap to drip onto the specially prepared ground below. The harvesting is done during the summer between July and September. After the mastic is collected, it is washed manually and is set aside to dry, away from the sun, as it will start melting again.[1][2][citation needed]