Types of arrhythmias in children. American Heart Association. http://www.heart.org/HEARTORG/Conditions/Arrhythmia/AboutArrhythmia/Types-of-Arrhythmia-in-Children_UCM_302023_Article.jsp. Updated July 7, 2016. Accessed August 2016.
Premature contractions – PACs and PVCs. American Heart Association. http://www.heart.org/HEARTORG/Conditions/Arrhythmia/AboutArrhythmia/Premature-Contractions---PACs-and-PVCs_UCM_302043_Article.jsp#.V7TRyE0m6po. Updated April 6, 2016. Accessed August 2016.
Premature ventricular contractions (PVCs). Cardiac Health. http://www.cardiachealth.org/premature-ventricular-contractions-pvcs. Accessed August 2016.