- Principles of Political Economy (1887) (external scan)
- 'Criteria of Truth and Error' in Mind, New Series, Vol. 9, No. 33 (Jan., 1900), 8-25.
- "Ethics," in Encyclopædia Britannica (11th ed., 1911) (1911) (in part)
- The Methods of Ethics
Works about SidgwickEdit
- "Sidgwick, Henry," in Dictionary of National Biography, 1901 supplement, London: Smith, Elder, & Co. (1901) in 3 vols.
- "Sidgwick, Henry," in Encyclopædia Britannica (11th ed., 1911)
- Henry Sidgwick: A Memoir (1906) by Sidgwick, A., E.M. and H. (external scan)
Some or all works by this author were published before January 1, 1928, and are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.