Woodruff, H. Charles
Howard W. Sams, 1968
Buku Teks
Krauss, Herbert L., author
John Wiley & Sons, 1980
Buku Teks
Allen & Unwin, 1992
Buku Teks
Ingram, Andrew, author
John Wiley & Sons, 2005
Buku Teks
Shore, Peter, author
Bernard Babani, 1995
Buku Referensi