Dull, Jonathan R
Yale University Press, 1985
Buku Teks
Bailey, Thomas Andrew, 1902-1983
Prentice-Hall, 1980
Buku Teks
Bemis, Samuel Flagg, 1891-1973
Holt, Rinehart and Winston, 1965
Buku Teks
Kajima, Morinosuke
Charles E. Tuttle, 1965
Buku Teks
Collins, James
The Bruce Publishing Company, 1954
Buku Teks