Gaya APA
Walker, Richard. (2006).
DIGESTING FOOD .
Australia:
GROLIER.
Gaya Chicago
Walker, Richard.
DIGESTING FOOD.
Australia:
GROLIER,
2006.
Text.
Gaya MLA
Walker, Richard.
DIGESTING FOOD.
Australia:
GROLIER,
2006.
Text.
Gaya Turabian
Walker, Richard.
DIGESTING FOOD.
Australia:
GROLIER,
2006.
Print.