APA (7th ed.) Citation

Allaby, A., & Allaby, M. (1999). A dictionary of earth sciences (2nd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Allaby, Ailsa, and Michael Allaby. A Dictionary of Earth Sciences. 2nd ed. Oxford, New York: Oxford University Press, 1999.

MLA (9th ed.) Citation

Allaby, Ailsa, and Michael Allaby. A Dictionary of Earth Sciences. 2nd ed. Oxford University Press, 1999.