editors, Robert E. Ward and Roy C. Macridis
Prentice-Hall, 1963
Buku Teks
Joad, C.E.M., author
Clarendon Press, 1959
Buku Teks
Grimes, Alan P., author
Oxford University Press , 1959
Buku Teks
Grimes, Alan P., author
Oxford University Press , 1959
Buku Teks
Varma, S.P., author
Radja Grafindo Persada, 2003
Buku Teks