Paul Watson, David Gibson, Hanney Neil, Peter Rushforth, Stuart Smith, Catherine Walsh, Garry Workman
Blackwell Publishing, 2008
Buku Teks
Anderson, James M., author
McGraw-Hill, 1998
Buku Teks
Kissam, Philip, author
McGraw-Hill, 1978
Buku Teks
Brookes, Alan J., author
Taylor &Fransic, 2008
Buku Teks
McCormac, Jack C., author
Prentice-Hall, 1995
Buku Teks