APA (7th ed.) Citation

McDonald, K. L. (1968). On the planetary dynamo theory. Earth Sciences Laboratories.

Chicago Style (17th ed.) Citation

McDonald, Keith L. On the Planetary Dynamo Theory. Boulder, Colo.: Earth Sciences Laboratories, 1968.

MLA (9th ed.) Citation

McDonald, Keith L. On the Planetary Dynamo Theory. Earth Sciences Laboratories, 1968.

Warning: These citations may not always be 100% accurate.