Bretnor, R. e., & Bova, B. (1940). Science, fiction, today and tomorrow: A discursive symposium (1st ed.].). Harper and Row.
Citace podle Chicago (17th ed.)Bretnor, Reginald ed, a Benjamin Bova. Science, Fiction, Today and Tomorrow: A Discursive Symposium. 1st ed.]. New York: Harper and Row, 1940.
Citace podle MLA (9th ed.)Bretnor, Reginald ed, a Benjamin Bova. Science, Fiction, Today and Tomorrow: A Discursive Symposium. 1st ed.]. Harper and Row, 1940.
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