Silver Platter Information, 1996
Multimedia
Kolbe, Helen K.
A Division of plenum Publ., 1980
Buku Teks
Owen, Dolores B.
Scarecrow Press, 1974
Buku Referensi
The University of Hong Kong, 1998
Buku Referensi
advisory board Bactiar Alam
Directorate of Research and Public Services, 2012
Buku Referensi