David Amerland (2015). “The Social Media Mind: How social media is changing business, politics and science and helps create a new world order”, p.59, New Line Publishing
David Amerland (2013). “Google Semantic Search: Search Engine Optimization (SEO) Techniques That Get Your Company More Traffic, Increase Brand Impact, and Amplify Your Online Presence”, p.5, Que Publishing
David Amerland (2013). “Google Semantic Search: Search Engine Optimization (SEO) Techniques That Get Your Company More Traffic, Increase Brand Impact, and Amplify Your Online Presence”, p.18, Que Publishing