http://www.quicksprout.com/the-advanced-guide-to-link-building-chapter-4/

http://www.quicksprout.com/the-advanced-guide-to-link-building-chapter-9/

http://www.searchenginejournal.com/101-ways-to-link-build-in-2012/46988/

http://www.wikihow.com/Start-Link-Building-for-Your-Website

http://moz.com/ugc/link-building-ideas-to-get-more-customers

http://tools.seounity.com/Backlink-Builder/

screenshot-www quicksprout com 2014-11-07 15-54-30