1. Accessed: 2017-01-01. Yahoo Kids. https://www.kids.yahoo.com/. Accessed: 2017-01-01. Yahoo Kids. https://www.kids.yahoo.com/.
2. Accessed: 2017-12-29. Bing. https://www.bing.com/?FORM=Z9FD1. Accessed: 2017-12-29. Bing. https://www.bing.com/?FORM=Z9FD1.
3. Accessed: 2017-12-29. Co:Writer Universal. https://cowriter.com/. Accessed: 2017-12-29. Co:Writer Universal. https://cowriter.com/.
4. Accessed: 2017-12-29. Google. https://www.google.com/. Accessed: 2017-12-29. Google. https://www.google.com/.
5. Accessed: 2017-12-29. Google Search Filter. https://chrome.google.com/webstore/detail/google-search-filter/peonfgnlcjhplcangdeldgmjpgekkjbj. Accessed: 2017-12-29. Google Search Filter. https://chrome.google.com/webstore/detail/google-search-filter/peonfgnlcjhplcangdeldgmjpgekkjbj.