International first aid and resuscitation guidelines 2016. ifrc.org/Global/Publications/Health/First-Aid-2016-Guidelines_EN.pdf.

Integrated 2010 & 2015 American Heart Association guidelines for cardiopulmonary resuscitation and emergency cardiovascular care. Part 5: Adult basic life support and cardiopulmonary resuscitation quality. eccguidelines.heart.org/index.php/circulation/cpr-ecc-guidelines-2/part-5-adult-basic-life-support-and-cardiopulmonary-resuscitation-quality/?strue=1&id=8.