APA (7th ed.) Zitazioa

Eiseley, L. (1969). The unexpected universe. Penguin.

Chicago Style (17th ed.) Zitazioa

Eiseley, Loren. The Unexpected Universe. Harmondsworth: Penguin, 1969.

MLA (9th ed.) Zitazioa

Eiseley, Loren. The Unexpected Universe. Penguin, 1969.