Gaya APA
Ling, A, K.
(2002).
Health Education 4 : Textbook
(
SD 4)
.
Singapore:
Marshall Cavendish, 2003.
Gaya MLA
Ling, Ang, Kai.
"Health Education 4 : Textbook".
SD 4
Singapore:
Marshall Cavendish, 2003,
2002.
Text.