Article, handout, infographic, presentation and video sources
- CreditCards.com - https://www.creditcards.com/credit-card-news/glossary/term-overdraft-protection/
- National Credit Union Administration - http://www.mycreditunion.gov/Pages/pocket-cents-understanding-a-check-and-balancing-checkbook.aspx
- The Atlantic - http://www.theatlantic.com/business/archive/2014/06/the-rise-and-fall-of-checks/372217/
- Wallet Hub - https://wallethub.com/edu/how-to-balance-a-checkbook/13769/
Canadian sources (for specific differences)