Specific incidents
Book sources - Wikipedia
https://en.wikipedia.org/wiki/Special:BookSources/978-0-312-23925-1ISBN - Wikipedia
https://en.wikipedia.org/wiki/ISBN_(identifier)http://www.religioustolerance.org/abo_viol.htm
http://www.religioustolerance.org/abo_viol.htm
By country
Library of Congress - Wikipedia
https://en.wikipedia.org/wiki/Library_of_CongressAttention Required! | Cloudflare
http://webarchive.loc.gov/all/20041113091949/http://www.prochoice.org/about_abortion/violence/anthrax.htmlhttp://www.prochoice.org/about_abortion/violence/anthrax.html
http://www.prochoice.org/about_abortion/violence/anthrax.htmlEncyclopedia of Terrorism
https://books.google.com/books?id=ZOfkAoDb_2IC&pg=PA39&lpg=PA39&dq=george+patterson+abortion+murder+convicted&source=bl&ots=-r3t-tqMXs&sig=YHkAfS_2hGWVajvF1MInu0-HHMw&hl=en&ei=faz5TJCyK8SBlAez0rikBw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CDUQ6AEwCDgK#v=onepage&q=george%20patterson%20abortion%20murder%20convicted&f=falseMobile, Alabama - Wikipedia
https://en.wikipedia.org/wiki/Mobile,_Alabamahttp://www.prochoice.org/pubs_research/publications/downloads/about_abortion/violence_stats.pdf
http://www.prochoice.org/pubs_research/publications/downloads/about_abortion/violence_stats.pdfNational Abortion Federation: Clinic Violence: Arsons and Bombings
https://web.archive.org/web/20110926221700/http://www.prochoice.org/about_abortion/violence/arsons.asphttp://www.prochoice.org/about_abortion/violence/arsons.asp
http://www.prochoice.org/about_abortion/violence/arsons.aspSniper Attacks on Doctors Create Climate of Fear in Canada (Published 1998)
https://www.nytimes.com/1998/10/29/nyregion/sniper-attacks-on-doctors-create-climate-of-fear-in-canada.html?pagewanted=all&src=pmWayback Machine - Wikipedia
https://en.wikipedia.org/wiki/Wayback_MachineNAF | About Abortion | Clinic Violence | History of Violence
https://web.archive.org/web/20060224200206/http://www.prochoice.org/about_abortion/violence/history_violence.htmlhttp://www.prochoice.org/about_abortion/violence/history_violence.html
http://www.prochoice.org/about_abortion/violence/history_violence.htmlhttp://www.religioustolerance.org/abo_viol.htm
http://www.religioustolerance.org/abo_viol.htm