1. IEEE 802.11 WG, IEEE Standard for information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 1: Radio Resource Measurement of Wireless LANs, IEEE 802.11k-2008, The Institute of Electrical and Electronics Engineers, Inc., New York, USA, June 2008.
2. Skyhook Wireless .
3. Apple Q&A on Location Data .
4. Location in Google Settings .
5. Windows Phone How-to: Location and My Privacy FAQ .