De Burgh, W.G. (William George), 1866-1943
Penguin Books, 1953
Buku Teks
Webster, Hutton, author
D.C. Heath, 1947
Buku Teks
Ewing, Ethel E., author
Rand McNally & Company, 1962
Buku Teks
McKay, John P., author
Houghton Miffiln, 1984
Buku Teks
Guo, Bonan, author
Wu zhou chuan bo chu ban she, 2009
Buku Teks