Gaya APA
Keat, Y, E., Kow, K, G. (2008).
Longman Essential Physics SPM .
Malaysia:
Pearson Education South Asia Pte Ltd.
Gaya MLA
Keat, Yap, Eng., Kow, Khoo, Goh.
"Longman Essential Physics SPM".
Malaysia:
Pearson Education South Asia Pte Ltd,
2008.
Text.