Gaya APA
Walker, R., Pratiwi, .
(2002).
ENCYLOPEDIA OF THE HUMAN BODY
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Great Britain:
Dorling Kindersley Limited.
Gaya MLA
Walker, Richard., Pratiwi, .
"ENCYLOPEDIA OF THE HUMAN BODY".
Great Britain:
Dorling Kindersley Limited,
2002.
Text.