APA (7th ed.) Citation

Ball, R. H., Kahle, A. B., & Vestine, E. H. (1968). Variations in the geomagnetic field and in the rate of the earth's rotation. Rand Corp..

Chicago Style (17th ed.) Citation

Ball, Richard Henry, Anne B. Kahle, and E. H. Vestine. Variations in the Geomagnetic Field and in the Rate of the Earth's Rotation. Santa Monica, Calif.: Rand Corp., 1968.

MLA (9th ed.) Citation

Ball, Richard Henry, et al. Variations in the Geomagnetic Field and in the Rate of the Earth's Rotation. Rand Corp., 1968.