Angus, H.F.
University of Toronto Press , 1953
Buku Teks
Clyde, Paul Hibbert, author
Prentice-Hall, 1953
Buku Teks
Walker, Allan S., author
Australian War Memorial, 1956
Buku Teks
Thompson, Warren S., author
The University of Chicago Press, 1959
Buku Teks
Latourette, Kenneth Scott, author
Macmillan, 1957
Buku Teks