^Bails, Jerry; Hames Ware. "Powell, Bob". Who's Who of American Comic Books 1928–1999. Retrieved September 11, 2013.
While Ro, Ronin (2004). Tales to Astonish: Jack Kirby, Stan Lee and the American Comic Book Revolution. Bloomsbury USA. p. 4. ISBN1-58234-345-4. gives Stanislav Pavlowsky, and Schumacher, Michael (2010). Will Eisner: A Dreamer's Life in Comics. Bloomsbury USA. p. 42. ISBN978-1608190133. gives Stanislav Pavlowsky, Bails and Ware note: "family name corrected by his son, Seth R. Powell July 2006."