APA (7th ed.) Citation

Poppy, D. R. (1867). On the existence of a supreme being.

Chicago Style (17th ed.) Citation

Poppy, Darnley Rowland. On the Existence of a Supreme Being. 1867.

MLA (8th ed.) Citation

Poppy, Darnley Rowland. On the Existence of a Supreme Being. 1867.

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