Lenczowski, George
Cornell University Press, 1956
Buku Teks
Routledge & Kegan Paul, 1958
Buku Teks
Harari, Maurice
Prentice-Hall, 1962
Buku Teks
Ochsenwald, William
McGraw-Hill, 2011
Buku Teks
Halliday, Fred
Cambridge University Press, 2005
Buku Teks