All you need to know about the types of LED bulbs - Rediff.com
Guide to Light Fittings, Caps and Bases | Lightbulbs Direct
Bulb Fittings and Shapes - Ledlam Lighting
Energy efficient lighting - Centre for Sustainable Energy
A Light Bulb Runs at the Speed of Light | The Wall Lighting Company
LampShopOnline - Your guide to light bulb fittings. We know that the huge amount of different light bulb fittings available can be very confusing. So we have summarised the most popular light