Service, Elman R. (Elman Rogers), 1915-1996, author
Prentice-Hall, 1966
Buku Teks
Coon, Carleton S., author
Alfred A. Knopf, 1962
Buku Teks
Wendt, Herbert, author
Houghton-Mifflin, 1956
Buku Teks
Ingold, Tim, 1948-, author
Routledge, 2016
Buku Teks
O`hear, Anthony, author
Clarendon Press, 1997
Buku Teks