APA (7th ed.) Citation

Argyll, G. D. C. (1884). The unity of nature. G.P. Putman's sons.

Chicago Style (17th ed.) Citation

Argyll, George Douglas Campbell. The Unity of Nature. New York [etc.]: G.P. Putman's sons, 1884.

MLA (8th ed.) Citation

Argyll, George Douglas Campbell. The Unity of Nature. G.P. Putman's sons, 1884.