Daugherty, Carrol R.
Houghton Mifflin, 1952
Buku Teks
Fulmer, William E.
Richard D. Irwin, 1980
Buku Teks
Friedman, Julian R.
Institute of pacific relations, 1949
Buku Teks
Schregle, Johannes
UP.Law Center, 1975
Buku Teks
Strecker, David E.
CRC Press Taylor & Francis Group, 2011
Buku Teks