APA aipamena

Clarke, A. C. a. L. (1989). Cradle. Futura publications.

Chicago Style aipamena

Clarke, Arthur C and Lee. Cradle. Great Britain: Futura publications, 1989.

MLA aipamena

Clarke, Arthur C and Lee. Cradle. Futura publications, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.