editor, John G. Webster
CRC Press, 1999
Buku Referensi
Soloman, Sabrie
McGraw-Hill, 2010
Buku Teks
Anderson, Norman A.
Chilton Book Company, 1972
Buku Teks
Cooke, Robert
Wiley-blackwell, 2009
Buku Teks
Anderson, Norman A.
Chilton Book Company, 1980
Buku Teks