edited by, Jones Maitland Jr., Robert A. Moss
John Wiley & Sons, 1981
Buku Teks
Mellon, M.G., author
McGraw-Hill, 1982
Buku Teks
Kuroki, Tsutomu, author
Pergamon Press, 1981
Buku Teks
Schmeckebier, Laurence F., author
The Brookings Institution , 1961
Buku Teks
Boyd, Anne Morris, author
H.W. Wilson, 1949
Buku Teks