Spiegelman, Mortimer
Harvard University Press, 1968
Buku Teks SO
Pressat, Roland
Methuen, 1966
Buku Teks SO
Pressat, Roland
Methuen, 1978
Buku Teks SO
Bose, Ashish
University of North Carolina Press, 1972
Buku Teks SO
Ford, Thomas R.
Prentice-Hall, 1970
Buku Teks SO