Gunawan, author
Jurnal Teknologi Industri dan Informasi, 2001
Artikel Jurnal
The International Association of Universities, 1995
Buku Referensi
Paris: The International Association of Universities, 1997
Buku Referensi
edited by K.M. Hussain
Organisation for Economic Co-operation and Development, 1977
Buku Teks
Taubman, Paul, 1939-, author
McGraw-Hill, 1974
Buku Teks