APA (7th ed.) Citation

Jonkers, A. R. T. (2003). Earth's magnetism in the age of sail. Johns Hopkins University Press.

Chicago Style (17th ed.) Citation

Jonkers, A. R. T. Earth's Magnetism in the Age of Sail. Baltimore: Johns Hopkins University Press, 2003.

MLA (9th ed.) Citation

Jonkers, A. R. T. Earth's Magnetism in the Age of Sail. Johns Hopkins University Press, 2003.