Byrne, John. «Topic: Spider-man costume -red and black?» (en anglès). Byrne Robotics, 22-09-2007. Arxivat de l'original el 22 febrer 2012. [Consulta: 7 març 2020]. «My color-blindness affects only a narrow range of green and brown tones, which I tend to reverse. As Roger Stern delights in pointing out, I drew my first half dozen issues of Iron Fist thinking his costume was brown.»
Byrne, John. «Web Comics» (en anglès). Byrne Robotics. Arxivat de l'original el 31 agost 2012. [Consulta: 7 març 2020].
cbgxtra.com
Miller, John Jackson. «Comics Industry Birthdays». Iola, Wisconsin: Comics Buyer's Guide, 10-06-2005. Arxivat de l'original el 18 febrer 2011. [Consulta: 22 novembre 2019].
Miller, John Jackson. «Comics Industry Birthdays». Iola, Wisconsin: Comics Buyer's Guide, 10-06-2005. Arxivat de l'original el 18 febrer 2011. [Consulta: 22 novembre 2019].
Byrne, John. «Topic: Spider-man costume -red and black?» (en anglès). Byrne Robotics, 22-09-2007. Arxivat de l'original el 22 febrer 2012. [Consulta: 7 març 2020]. «My color-blindness affects only a narrow range of green and brown tones, which I tend to reverse. As Roger Stern delights in pointing out, I drew my first half dozen issues of Iron Fist thinking his costume was brown.»
