Hacker, Louis M.
Columbia University Press, 1947
Buku Teks SO
edited by James Ward Smith and A. Leland Jamison
Princeton University Press, 1961
Buku Teks SO
Cohen, Nathan Edward
Holt, Rinehart and Winston, 1958
Buku Teks
edited by David J. Rothman and Sheila M. Rothman
Basic Books, 1975
Buku Teks SO
Ravitz, Abe C.
Press of Western Reserve University, 1962
Buku Teks SO