most standard household bulbs are fine for a basking light, or flood/spot styles can work too.
For UVB repti-sun or repti-glo (similar names, two different companies, but both products are excellent) florescent tubes are best, or the mercury vapor bulbs by the same companies (Exo-terre or Zoo-Med). Some other brands are good too I just cant' recall their names off hand.
Avoid the compact florescent tubes, they don't work as good and concentrate all the UVB in a relatively small area..so your dragon doesn't get exposed as much. ALso, they are known to cause eye problems.
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PHLdyPayne