Tip #1 (Northern breed owners shall ignore tip #1 ) Don't run after your dog if you can help it. Chasing them just tells them that it is OK and FUN. Try to turn your back to them. (Body direction tells them which way you want them to go.)

Tip #2 Condition them to special treats. Think psychology here. Think that guy with the bell. We have conditioned Koli to white styrofoam boxes (purely by accident but quite worthwhile.) She gets worked up almost beyond control on the sight of one and drools more than any healthy Husky should. (A styrofoam box can be carried just about anywhere and is QUITE visible.)

Prior to tip 3. Make sure your dog knows your command for "come" (I'll give more tips one that if you reply that she doesn't,) and a release command.
Tip #3 Get a 20ft or so training lead. Take the dog (ONLY the one you are training, leave the others at home; ) to a field or some other wide open area where there won't be many distractions. Keep dog on somewhat of a heel until you actually get into the space. Then "release" the dog. Let it sniff and wander and run for a few minutes. Then call the dog to you. Only call it once. If it doesn't come reel it in. Release it again. let it sniff or whatever for another minute. Call again. Repeat until the dog comes to you willingly. Praise it to high heavens. Verbally. In addition... If your dog is food motivated have a treat ready immediately. If your dog is love motivated give tones of scritchies (or whatever affection it loves.) If your dog is exercise driven release it almost the second it comes back to you. Also important if you are having trouble getting the dog to recall at all is to praise it if it even stops what it's doing for a second and *thinks* about possibly coming to you. (Generally if you can get a dog to raise its head from sniffing and look at you, a mild "Good Dog" is enough to get it to come to you the rest of the way.)