Gaya APA
Singapore: Bus Guide & Bus-Stop Directory. (2013).
Singapore:
.
Gaya Chicago
Singapore: Bus Guide & Bus-Stop Directory.
.
Singapore:
,
2013.
Monograf.
Gaya MLA
Singapore: Bus Guide & Bus-Stop Directory.
.
Singapore:
,
2013.
Monograf.
Gaya Turabian
Singapore: Bus Guide & Bus-Stop Directory.
Singapore:
,
2013.
Monograf.