Gaya APA
Tay, B.
(2007).
Biology Insights '0' Level Theory Workbook (2007)
.
Singapura:
Pearson Education.
Gaya MLA
Tay, Beverly.
"Biology Insights '0' Level Theory Workbook (2007)".
Singapura:
Pearson Education,
2007.
Printed Book.