1. Facebook
2. Advertising Revenues of Selected Social Networks;U S;STATISTA,2015
3. How to Use SEO, Google Ads to Attract Search Traffic: Google Ads Guide
4. The West German forecast for 1985
5. UDAP laws authorize attorneys general's offices to conduct pre-suit investigations. For a comparison between these laws, see;Carolyn Carter;THE STATES: A 50-STATE EVALUATION OF UNFAIR AND DECEPTIVE PRACTICES LAWS 9,2018