Gaya APA
Teo - Gwan Wai Lan,...dkk. (2002).
Science 4B : Activity book - Teacher's Edition .
Singapore:
Federal.
Gaya Chicago
Teo - Gwan Wai Lan,...dkk.
Science 4B : Activity book - Teacher's Edition.
Singapore:
Federal,
2002.
Text.
Gaya MLA
Teo - Gwan Wai Lan,...dkk.
Science 4B : Activity book - Teacher's Edition.
Singapore:
Federal,
2002.
Text.
Gaya Turabian
Teo - Gwan Wai Lan,...dkk.
Science 4B : Activity book - Teacher's Edition.
Singapore:
Federal,
2002.
Print.