Tohutoro APA (7th ed.)

Armstrong, D. M. (1983). Whats is a law of nature. Cambridge University Press.

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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