^Jason V. Brock, "Finding Sanctuary: Running from the Zone to Logan" in Brock, Disorders of Magnitude: A Survey of Dark Fantasy. New York: Rowman & Littlefield, 2014. ISBN9781442235243. pp. 101–109.
^Harold Lee Prosser, "Nolan, William F(rancis)" in Twentieth-Century Science-Fiction Writers, edited by Curtis C. Smith. Chicago, St. James, 1986. ISBN9780912289274. pp. 539–41.
^Ray Russell, "Nolan, William F(rancis)" in John M. Reilly, Twentieth-century Crime and Mystery Writers (second ed.). St. James, 1986. pp. 677–9. ISBN9780912289175.