4Ps to 4Cs

http://prezi.com/ufyfnzbhibdq/copy-of-copy-of-4ps-and-4cs-of-marketing/

http://www.customfitonline.com/news/2012/10/19/4-cs-versus-the-4-ps-of-marketing/

Internet Marketing Mix ( New 4P’s to 4C’s)

http://mootee.typepad.com/innovation_playground/2007/07/wen-20-and-the-.html