Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 2-Pin GX23-2 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPLD13/41/HDRP - The Home Depot
27 Watt Compact Fluorescent lamp Medium Base 120V — LightStoreUSA
OHLECTRIC Mini Spiral T3 Compact Fluorescent Light Bulbs - Twist and Lock GU24 Base - 120V - 13W - 800L - 2-Pin Fluorescent Bulbs - 2700K - Pack of 2; OL-22023 - Amazon.com