APA (7th ed.) Citation

Bretnor, R. (1976). The Craft of science fiction: A symposium on writing science fiction and science fantasy. Harper & Row.

Chicago Style (17th ed.) Citation

Bretnor, Reginald. The Craft of Science Fiction: A Symposium on Writing Science Fiction and Science Fantasy. New York: Harper & Row, 1976.

MLA (9th ed.) Citation

Bretnor, Reginald. The Craft of Science Fiction: A Symposium on Writing Science Fiction and Science Fantasy. Harper & Row, 1976.