Tai, Sung An
Pegasus, 1972
Buku Teks SO
Solomon, Richard H.
University of California Press, 1971
Buku Teks SO
Moraes, Francis Robert
Macmillan, 1953
Buku Teks SO
Chen, Jerome
Oxford University Press, 1967
Buku Teks SO
Jones, Gregg R.
Westview Press, 1989
Buku Teks SO