Snedden, Billy Mackie, author
Macmillan, 1990
Buku Teks
Richman, Fred, author
Brooks/Cole, 1967
Buku Teks
Hartono Ahmad Jaiz, author
Pustaka Al-Kautsar, 2002
Buku Teks
Galbraith, John Kenneth, 1908-2006, author
Houghton Mifflin, 1979
Buku Teks
Galston, William A., author
Cambridge University Press, 2005
Buku Teks