Robert Evenhouse (2012-07-30). Blogging 101: Maintaining Readership. http://parttimenovel.com/.
Michael Hartzell (2014-05-29). 12 Websites for Royalty Free Stock Photos for Business Advertising. http://www.michaelhartzell.com/.
Øyvind Holmstad (2012-08-10). PERMACULTURE, NATURE & CIVILIZATION. http://permaculturenews.org/.