Houston, Brant, author
St. Martin Press, 1996
Buku Referensi
Yip-Wah, Chung, author
Academic Press, 2001
Buku Teks
Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi
Medhurst, David, author
Blackwell Scientific Publications, 1994
Buku Referensi
Brinckerhoff, Parsons, author
John Wiley & Sons, 1992
Buku Referensi