Gaya APA
Walker, Richard. (2003).
How We Breathe .
Malaysia:
Grolier.
Gaya Chicago
Walker, Richard.
How We Breathe.
Malaysia:
Grolier,
2003.
Text.
Gaya MLA
Walker, Richard.
How We Breathe.
Malaysia:
Grolier,
2003.
Text.
Gaya Turabian
Walker, Richard.
How We Breathe.
Malaysia:
Grolier,
2003.
Print.