Dyfyniad APA

Bretnor, R. e., & Bova, B. (1940). Science, fiction, today and tomorrow: A discursive symposium (1st ed.].). Harper and Row.

Dyfyniad Arddull Chicago

Bretnor, Reginald ed, and Benjamin Bova. Science, Fiction, Today and Tomorrow: A Discursive Symposium. 1st ed.]. New York: Harper and Row, 1940.

Dyfyniad MLA

Bretnor, Reginald ed, and Benjamin Bova. Science, Fiction, Today and Tomorrow: A Discursive Symposium. 1st ed.]. Harper and Row, 1940.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.