APA (7th ed.) Citation

Adler, F. (1920). An ethical philosophy of life presented in its main outlines. D. Appleton.

Chicago Style (17th ed.) Citation

Adler, Felix. An Ethical Philosophy of Life Presented in Its Main Outlines. New York, London: D. Appleton, 1920.

MLA (9th ed.) Citation

Adler, Felix. An Ethical Philosophy of Life Presented in Its Main Outlines. D. Appleton, 1920.