Crane, R.S.
University of Chicago Press, 1971
Buku Teks SO
Krieger, Murray, editor
The Johns Hopkins University Press, 1976
Buku Teks SO
Luxemburg, Jan van
Gramedia , 1989
Buku Teks SO
Juhl, P.D.
Princeton University Press, 1980
Buku Teks SO
Mayfield Publishing Company , 1994
Buku Teks SO