Book Sources

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Encyclopedia of Science Fiction by Robert Holdstock (1978) ISBN 0706407563 & ISBN 0861781864

The World of Science Fiction, 1926-1976 by Lester del Rey (1980) ISBN 0824014464

Science Fiction of the 20th Century by Frank M. Robinson (1999) ISBN 1888054298

The Creation of Tomorrow by Paul A. Carter (1977) ISBN 0231042108

Isaac Asimov: The Foundations of Science Fiction by James Gunn (1982) ISBN 0195030605

Conversations with Isaac Asimov by Carl Freedman (2005) ISBN 1578067383

The Futurians by Damon Knight (1977) ISBN 0381982882

Future Perfect Revised Edition by H. Bruce Franklin (1978) ISBN 0195023226