Joseph, John Earl
Cambridge University Press, 2018
Buku Teks
Carroll, John B.
Prentice-Hall, 1964
Buku Teks
Reboul, Anne
Oxford University Press, 2017
Buku Teks
Pateman, Trevor
Clarendon Press , 1987
Buku Teks SO
Yule, George
Cambridge Cambridge University , 2006
Buku Teks