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 Martial arts:

"

Various forms and sparring are commonly used in martial art exhibitions and tournaments. Some competitions pit practitioners of different disciplines against each other using a common set of rules, these are referred to as mixed martial arts competitions. Rules for sparring vary between art and organization but can generally be divided into light-contact, medium-contact, and full-contact variants, reflecting the amount of force that should be used on an opponent.[citation needed]