Sumich, James L.
Wm.C. Brpwn, 1992
Buku Teks
Sumich, James L.
McGraw-Hill, 1999
Buku Teks
The Library Unesco/Rostsea
Unesco/Rostsea, 1992
Buku Referensi
Sheppard, Charles
Academic Press, 1992
Buku Teks
Hutton, Wendy
Periplus Editions, 1996
Buku Referensi