Ayer, Alfred Jules, 1910-1989
The central questions of philosophy
Penguin Books, 1982
 Buku Teks SO
Rader, Melvin
The enduring questions; main problems of philosophy / Melvin Rader.
Holt, Rinehart and Winston, 1966
 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
Classic philosophical questions
editor, James A. Gould
Charles E. Merrill , 1971
 Buku Teks SO
Mulvaney, Robert J.
Classic philosophical questions
Essex Pearson, 2014
 Buku Teks SO