Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi
Canter, Larry W., author
McGraw-Hill, 1996
Buku Teks
Clark, Brian D., author
Mansell, 1980
Buku Teks
Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Ortolano, Leonard
John Wiley & Sons, 1997
Buku Teks