United Nations, 1970
Buku Teks
Bittker, Boris I., author
Federal Tax Press, 1968
Buku Teks
Doernberg, Richard L., author
West , 1993
Buku Teks
Gunadi, author
[publisher not identified], 2001
Buku Teks
Gaffney, Dennis J., author
McGraw-Hill, 1982
Buku Teks