APA (7th ed.) Zitazioa

Ordway, R. J. (1966). Earth science. Affiliated.

Chicago Style (17th ed.) Zitazioa

Ordway, Richard J. Earth Science. New Delhi: Affiliated, 1966.

MLA (9th ed.) Zitazioa

Ordway, Richard J. Earth Science. Affiliated, 1966.