by John Macsai ... [and others] ; illustrator, Alfred J. Hidvegi
Wiley, 1976.
Buku Teks
edited by David Garland and Richard Sparks
Oxford University Press, 2000
Buku Teks
Johnson, Earl S., author
Macmillan, 1956
Buku Teks
Ritzer, George, author
McGraw-Hill, 1997
Buku Teks
Jordan, Brill, author
Polity Press, 1996
Buku Teks