APA (7th ed.) Citation

Armstrong, D. M. (1983). What is a Law of Nature? Cambridge University Press.

Chicago Style (17th ed.) Citation

Armstrong, D. M. What Is a Law of Nature? Cambridge: Cambridge University Press, 1983.

MLA (9th ed.) Citation

Armstrong, D. M. What Is a Law of Nature? Cambridge University Press, 1983.

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