National Book League (Great Britain) & Science Fiction Foundation. (1971). The Best of SF: An international exhibition of science fiction literature, May 17-31, [1971]. [National Book League].
Chicago Style (17th ed.) CitationNational Book League (Great Britain) and Science Fiction Foundation. The Best of SF: An International Exhibition of Science Fiction Literature, May 17-31, [1971]. [London]: [National Book League], 1971.
MLA (9th ed.) CitationNational Book League (Great Britain) and Science Fiction Foundation. The Best of SF: An International Exhibition of Science Fiction Literature, May 17-31, [1971]. [National Book League], 1971.
Warning: These citations may not always be 100% accurate.