Feit Electric 60-Watt Equivalent T3 Spiral Non-Dimmable E26 Base Compact Fluorescent CFL Light Bulb, Soft White 2700K (48-Pack) ESL13T/12/4 - The Home Depot
Xtricity Compact Fluorescent Light Bulb T2 Spiral Light Bulbs CFL, 4100k Cool White, 9W (40 Watt Equivalent), 540 Lumens, E26 Medium Base Bulb, 120V, UL Listed (Pack of 4) - Amazon.com
Daylight Fluorescent Bulbs (27-watt, 5-pack)
Feit Electric 60-Watt Equivalent T3 Spiral Non-Dimmable GU24 Base Compact Fluorescent CFL Light Bulb, Daylight 5000K (2-Pack) BPESL13T/GU24D/2HDRP - The Home Depot
CFLs vs. Incandescents: Facts about Compact Fluorescent Light Bulbs
3 Unexpected Design Lessons From the Compact Fluorescent Light Bulb | Inc.com