Bentley, John Edward
Philosophy an outline-history: with questions and answers
Littlefield, Adams, 1958
 Buku Teks SO
Deussen, Paul, 1845-1919
Outline of the Vedanta system of philosophy according to Shankara
Grafton Press, 1927
 Buku Teks SO
Studies in Philosophy And The History of philosophy
edited by John K. Ryan
The Catholic University of America Press, 1963
 Buku Teks SO
Patrick, George Thomas White
Introduction to philosophy
George Allen and Unwin, 1925
 Buku Teks SO
Russell, Bertrand, 1872-1970
The problems of philosophy
Oxford University Press, 1912
 Buku Teks SO