Cortada, James W.
The Quality Yearbook 1994 Edition
McGraw-Hill, 1994
 Buku Referensi
The international design yearbook 2000
edited by Ingo Maurer
Laurence King Publishing, 2000
 Buku Referensi
The Republic of China yearbook 2000
Goverment Information Office, 2002
 Buku Referensi
Demographic yearbook : 1957, ninth issue = Annuaire demographique : 1957, neuvieme edition
United Nation. Departement of Economic and Social Affairs. Statistical Office
United Nation, 1957
 Buku Referensi
Demographic yearbook : 1985, thirty-seventh issue = Annuaire demographique : 1985, trente-septieme edition
United Nation. Departement of International Economic and Social Affairs. Statistical Office
United Nation, 1987
 Buku Referensi