• http://www.sociallystacked.com/2013/09/infgraphic-of-the-day/#sthash.oQqXbNrY.4vWpzDQa.dpbs
• http://socialmediatoday.com/pamdyer/2381691/using-hashtags-social-media-marketing
• http://socialmediatoday.com/faris-samawi/1565656/confused-understanding-hashtags-social-networks
• http://contentmarketinginstitute.com/2014/02/hashtags-social-media-content/
• http://socialmediatoday.com/krista-bunskoek/1869556/3-key-hashtag-strategies-how-market-your-business-content
• http://socialmediatoday.com/victoria-ipri/1417901/creating-your-own-twitter-hashtag-7-steps

• http://socialmediatoday.com/kevanlee/2528541/scientific-guide-hashtags-how-many-which-ones-and-where-use-them