13 Watt Compact Fluorescent Bulb - Warm White Light Bulb - Ultra Mini Spiral CFL Light Bulbs - 2700K - E26 Base - 2 Pack - GoodBulb - - Amazon.com
Are Compact Fluorescent Lightbulbs Really Cheaper Over Time? - IEEE Spectrum
Compact Fluorescent Lights | Philips lighting
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
Zoo Med ReptiSun 5.0 Mini Compact Fluorescent Lamp, 13 Watts | Petco