APA (7th ed.) Citation

Ferm, V. T. A. (1965). A history of philosophical systems. Littlefield, Adams & Co.

Chicago Style (17th ed.) Citation

Ferm, Vergilius Ture Anselm. A History of Philosophical Systems. Totowa, N.J.: Littlefield, Adams & Co, 1965.

MLA (8th ed.) Citation

Ferm, Vergilius Ture Anselm. A History of Philosophical Systems. Littlefield, Adams & Co, 1965.