Tryon, Warren W., author
Academic Press, 2014
eBooks
Shaughnessy, John J., author
McGraw-Hill, 1997
Buku Teks
Shaughnessy, John J., author
McGraw-Hill, 2003
Buku Teks
Townsend, John C., author
McGraw-Hill , 1953
Buku Teks
Bordens, Kenneth S., author
McGraw-Hill, 2002
Buku Teks