How Did You Hear About Our Club?

How did you hear about our club? We want to know, from a marketing perspective, what's working. There's a huge difference between someone saying, i saw a faithful gad or i drove by versus a friend of mine's a member here or so, and so told me about you. It's very different if smebody drove by the club and walked in cold. No report, no other connection, verses my friends. So i literally want to hear that now.