APA (7th ed.) Citation

Day, H. N. (1876). The science of ethics: An elementary system of theoretical and practical morality. G.P. Putnam's sons.

Chicago Style (17th ed.) Citation

Day, Henry Noble. The Science of Ethics: An Elementary System of Theoretical and Practical Morality. New York: G.P. Putnam's sons, 1876.

MLA (9th ed.) Citation

Day, Henry Noble. The Science of Ethics: An Elementary System of Theoretical and Practical Morality. G.P. Putnam's sons, 1876.

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