[Skullmonkee]

Hello, recently i synthesized colloidal gold out of HAuCl4 and sodium citrate.  the reaction used Tri-sodium citrate to reduce gold (III) to gold solid.  I guess this means that Au3+ (aq) + 3e- → Au (s) but what is the overall equation for this reaction?

Any help would be great since im writing a discussion but stuck on this part.

Thanks.