APA Style
Census of population 1990 : advance data release. (1990).
Singapura:
Departement of Statistics Singapore.
Chicago Style
Census of population 1990 : advance data release.
.
Singapura:
Departement of Statistics Singapore,
1990.
Text.
MLA Style
Census of population 1990 : advance data release.
.
Singapura:
Departement of Statistics Singapore,
1990.
Text.
Turabian Style
Census of population 1990 : advance data release.
Singapura:
Departement of Statistics Singapore,
1990.
Print.