APA Style
Walker, R. (2013).
Human Body: Facts at Your Fingertips (cet. 1).
Great Britain:
Dorling Kindersley Limid.
MLA Style
Walker, Richard.
"Human Body: Facts at Your Fingertips".
cet. 1
Great Britain:
Dorling Kindersley Limid,
2013.
Buku SMP Athalia.