Lindholm, Charles, author
Blackwell Publishing, 2008
Buku Teks
Mumford, Lewis, author
Harcourt, Brace, 1938
Buku Teks
Matsumoto, David, author
Thomson Wadsworth, 2004
Buku Teks
Russell, Richard Joel, author
Macmillan, 1954, 1951
Buku Teks
Benedict, Ruth, author
Hoghton Mifflin, 1959
Buku Teks