^(Inggris)Robert Silverberg di Internet Speculative Fiction Database (ISFDB). Retrieved 2013-03-26. Select a title to see its linked publication history and general information. Select a particular edition (title) for more data at that level, such as a front cover image or linked contents.
^"Science Fiction and Fantasy Hall of Fame". Mid American Science Fiction and Fantasy Conventions, Inc. Retrieved 2013-03-26. This was the official website of the hall of fame to 2004.
^"Alfies Awards". Locus Online News. 2013. Diakses tanggal February 14, 2017.
Bacaan tambahan
Sandra Miesel, "Dreams Within Dreams" in Darrell Schweitzer (ed). Exploring fantasy Worlds: Essays on Fantastic literature San Bernardino, CA: Borgo Press, April 1985, pp. 35–42. (On the novel Son of Man).