Columbia subject headings:
Crime prevention--Citizen participation.
Police--Singapore.
Police-community relations--Singapore.
Harvard subject headings:
Police--Singapore--Public opinion--Statistics.
Police--Singapore--Public opinion.
Police-community relations--Statistics.
Police-community relations.
Public opinion--Singapore--Statistics.
Public opinion--Singapore.
Princeton subject headings:
Crime prevention--Citizen participation.
Police--Singapore.
Police-community relations--Singapore.