White, Theodore H.
William Sloane Associates, 1961
Buku Teks SO
Rosinger, Lawrence K.
Princeton, 1944
Buku Teks SO
Morris, David
Houghton-Mifflin, 1949
Buku Teks SO
Sun, Youli
St. Martin's Press, 1993
Buku Teks SO
Rosinger, Lawrence K.
Princeton University Press, 1944
Buku Teks SO