Sanderson, Peter; Gilbert, Laura, ed. (2008). “1970s”. Marvel Chronicle A Year by Year History. Dorling Kindersley. p. 159. ISBN978-0756641238. "In June [1973], Marvel embarked on a story that would have far-reaching effects. The Amazing Spider-Man artist John Romita, Sr. suggested killing off Spider-Man's beloved Gwen Stacy in order to shake up the book's status quo."
David, Peter; Greenberger, Robert (2010). The Spider-Man Vault: A Museum-in-a-Book with Rare Collectibles Spun from Marvel's Web. Running Press. p. 49. ISBN0762437723. "The idea of beloved supporting characters meeting their deaths may be standard operating procedure now but in 1973 it was unprecedented...Gwen's death took villainy and victimhood to an entirely new level."
Manning, Matthew K.; Gilbert, Laura, ed. (2012). “1960s”. Spider-Man Chronicle Celebrating 50 Years of Web-Slinging. Dorling Kindersley. p. 31. ISBN978-0756692360. "This monumental issue saw the first appearances of Peter's upcoming love interest Gwen Stacy, prospective best friend, Harry Osborn, and even the future super villain known as the Jackal."
Sanderson, Peter (2007). The Marvel Comics Guide to New York City. New York City: Pocket Books（英語版）. pp. 30–33. ISBN1-4165-3141-6
Brucie, Dylan (March 2007). "Ultimate Spider-Man". Wizard Xtra!. p. 110.
In an interview in Wizard Magazine #180 (2006), Mark Bagley（英語版） remarked there were some "coloring issues" in Gwen's first appearances. He did not intend her eyes to be yellow.
