Bentley, John Edward
Littlefield, Adams, 1958
Buku Teks SO
Rader, Melvin
Holt, Rinehart and Winston, 1966
Buku Teks SO
editor, James A. Gould
Charles E. Merrill , 1971
Buku Teks SO
Mulvaney, Robert J.
Essex Pearson, 2014
Buku Teks SO
edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks SO