sql help on largest gift per customer

I'm trying to put together a custom view for some output elements that would give me various fields from the largest contribution for each customer.

So I've gotten this far in my select statement:

select customer_no, max(cont_amt) as cont_amt
from vs_contribution
group by customer_no

But how do I get the ref_no of this largest contribution in there so I can join to the full contribution record and get other info, like gift date, campaign, source, etc.?

Any help would be much appreciated!

Thanks,

Kirk Mortensen

TheatreWorks