“Ducky Shine 7 Blackout - MK Exclusive First Release - RGB LED Double Shot PBT Mechanical Keyboard with Cherry MX Black, Brown, Blue, Red, Silver, or Silent Red Switches.” MechanicalKeyboards.com - The Ultimate Mechanical Keyboard Catalog., https://mechanicalkeyboards.com/shop/index.php?l=product_detail&p=4332.

“Email Testing and Rendering.” Email On Acid, https://www.emailonacid.com/.

“Question Mark.” CIVHC.org, https://www.civhc.org/partner-with-us/question-mark/.