Xtricity Compact Fluorescent Light Bulb T2 Spiral CFL, 4100k Cool White, 9W (40 Watt Equivalent), 540 Lumens, E26 Medium Base, 120V, UL Listed (Pack of 2) - Amazon.com
CFLs vs. Incandescents: Facts about Compact Fluorescent Light Bulbs
Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 4-Pin G24Q-1 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPLD13E/41/HDRP - The Home Depot
Compact Fluorescent Lights | Kids Environment Kids Health - National Institute of Environmental Health Sciences
G.E. to Phase Out CFL Bulbs - The New York Times
What are CFL bulbs and where should they be used?
Replacement of incandescent bulbs with compact fluorescent lights in Ghana
Lighting A Revolution: Compact Fluorescent Lamp Drawing
Shapes of compact fluorescent lamps (CFL). | Download Scientific Diagram