Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi
Barbara Carroll and Trevor Turpin ; with Adam Boyden, Alison Carroll, and Ruth Thomas
Thomas Telford, 2009
Buku Teks
Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Anjaneyulu, Y., author
CRC Pres, 2011
Buku Teks
Canter, Larry W., author
McGraw-Hill, 1977
Buku Teks