Hornbeck, Stanley K.
World Peace Foundation, 1942
Buku Teks
Australian National University Press, 1971
Buku Teks
Morrison, Charles E., author
Martin Press, 1978
Buku Teks
Gunther, John, 1901-1970, author
Harper Brothers, 1951
Buku Teks
Reinschauer, Edwin O
Alfred A. Knopf, 1955.
Buku Teks