If you're having to ask your clients for referrals you're probably not going to get any.
Why?
Because you're clearly not remarkable.
How do I know that?
Because if you were remarkable they'd already be talking about you.
My friend Jason Roshek is a remarkable realtor. I know, because I find myself talking about him all the time. He's never asked me for a referral, but I've probably sent a dozen people his direction over that last few years.
Think about it. By definition, something that's remarkable is worth talking about. If no one is talking about you, you're not remarkable.
So, if you want referrals, quit asking for them and start being remarkable at whatever it is you do. Trust me, it works. Just ask Jason.