Commercial Contract source?

S-Man

I Recently got recruited to shoot a commercial job for a company and I'm not familiar with the contracts that are usually signed with these types of shoots. I do mainly weddings so it would be significantly different than my standard wedding contract.
Does anyone know a source or a website or something where I can find a good standard contract for commercial purposes? I'm sure I'd have to modify it a bit, but I need a starting point.

Google returns too much info as there are scores of pages with the words "Commercial contract" in them.

Thanks in advance.