Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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

Atenció: Aquestes cites poden no estar 100% correctes.