Allen, J.P.B.,edited
University Press , 1979
Buku Teks SO
editors, S.P. Corder, E. Roulet
AIMAV, 1974
Buku Teks SO
Oxford University Press, 1995
Majalah, Jurnal, Buletin
Li Wei
John Wiley & Sons Ltd, 2014
Buku Teks SO
edited by Archibald A. Hill
Voice of America, 1969
Buku Teks