Gaya APA
Postal code directory. (1995).
Singapore:
TAS.Telecommunication Authority of Singapore.
Gaya Chicago
Postal code directory.
.
Singapore:
TAS.Telecommunication Authority of Singapore,
1995.
Monograf.
Gaya MLA
Postal code directory.
.
Singapore:
TAS.Telecommunication Authority of Singapore,
1995.
Monograf.
Gaya Turabian
Postal code directory.
Singapore:
TAS.Telecommunication Authority of Singapore,
1995.
Monograf.