Gaya APA
Kwan, L, P. (2014).
Physiscs Matters GCE 'O' Level 4th Edition : Workbook .
Singapore ::
Marshall Cavendish International Private Limited.
Gaya MLA
Kwan, Lam, Peng.
"Physiscs Matters GCE 'O' Level 4th Edition : Workbook".
Singapore ::
Marshall Cavendish International Private Limited,
2014.
Text.