Gaya APA
Chong, O.
(2005).
PMR Science,latest PMR examination format
.
Malaysia:
Pustaka Sistem Pelajaran sdn,Bhd.
Gaya MLA
Chong, Oui,Ooi.
"PMR Science,latest PMR examination format".
Malaysia:
Pustaka Sistem Pelajaran sdn,Bhd,
2005.
Text.