Singapore : facts and pictures 1979
[Ministry of Culture. The Publicity Division], [1979]
 Buku Teks SO
Singapore : facts and pictures 1993 / edited by Ng Poey Siong
Ministry of Information and the Arts, 1993
 Buku Teks SO
Economic and Social survey of Asia and Pacific, 1978
by United Nations
United Nations, 1979
 Buku Teks
Malaysia : facts & pictures 2005
Dept. of Information Malaysia , 2005.
 Buku Teks SO
Trend in Singapore: proceedings anf background paper/edited by: Seah Chee Meow
Singapore UniVersity Press for ISEAS, 1975
 Buku Teks