Toynbee, Arnold J., author
Oxford University Press , 1948
Buku Referensi
Toynbee, Arnold J., author
Oxford University Press , 1948
Buku Referensi
Fried, Robert C., author
Yale University Press , 1963
Buku Teks
Waldo, Dwight, author
Ronald Press, 1948
Buku Teks
Rogers, Everett M., author
The Free Press, 1994
Buku Teks