Gaya APA
Tay, Beverly. (2007).
Science In Focus (O Level) .
:
.
Gaya Chicago
Tay, Beverly.
Science In Focus (O Level).
:
,
2007.
.
Gaya MLA
Tay, Beverly.
Science In Focus (O Level).
:
,
2007.
.
Gaya Turabian
Tay, Beverly.
Science In Focus (O Level).
:
,
2007.
.