One advantage of fluorescent bulbs is that they last very long and therefore are cost-efficient. On this light bulb you'll find a G13 socket.
Conrad Electronic
Philips Lighting Fluorescent tube EEC: G (A - G) G13 58.5 W Neutral white Tube shape (Ø x L) 28 mm x 1514.2 mm dimmable 1 pc(s)