Australian Government Publishing Service, 1976
Buku Teks
Stavrianos, Leften Stavros
Allyn and Bacon, 1967
Buku Teks
Steinberg, Christian E.W.S
[, Springer], 2012
eBooks
edited by David W. Orr
University of North Carolina Press, 1979
Buku Teks
Allyn and Bacon, 1966
Buku Teks