Steinberg, David J. (David Joel)
Cambodia: its people, its society, its culture
Hraf Press, 1059
 Buku Teks
Barnett, Clifford R.
Polan : its people its society its culture
Hraf Press, 1958
 Buku Teks
Kolevzon, Edward R.
Our world and its people
Allyn and Bacon, 1959
 Buku Teks
Moonitz, Maurice
Accounting : an anlysis of its problems
Brooklyn, Foundation Press
 Buku Teks
Zito, George V.
Population and its problems
Human Science Press, 1979
 Buku Teks