Fergusson, Erna
University of New Mexico Press, 1966
Buku Teks SO
edited by Vincenzo Costigliola
Springer, 2012
eBooks
Wu, Yuan-Li
Hoover Institution Press, Stanford University, 1975
Buku Teks SO
Gonzales, Joseph
Strategic Information and Research Development Centre, 2011
Buku Teks SO
Tang, Leang-Li
China United Press , 1936
Buku Teks