APA (7th ed.) Zitazioa

Hollinger. Parabolas of Science Fiction. Wesleyan University Press.

Chicago Style (17th ed.) Zitazioa

Hollinger. Parabolas of Science Fiction. Wesleyan University Press.

MLA (9th ed.) Zitazioa

Hollinger. Parabolas of Science Fiction. Wesleyan University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.