Manning, Matthew K.; Gilbert, Laura, ed. (2012). «1960s». Spider-Man Chronicle Celebrating 50 Years of Web-Slinging. Dorling Kindersley. p. 24. ISBN978-0756692360. «Electro charged into Spider-Man's life for the first time in another [Stan] Lee and [Steve] Ditko effort that saw Peter Parker using his brilliant mind to outwit a foe.»
Manning, Matthew K.; Gilbert, Laura, ed. (2012). «1960s». Spider-Man Chronicle Celebrating 50 Years of Web-Slinging. Dorling Kindersley. p. 24. ISBN978-0756692360. «Electro charged into Spider-Man's life for the first time in another [Stan] Lee and [Steve] Ditko effort that saw Peter Parker using his brilliant mind to outwit a foe.»