Gaya APA
Walker, Richard. (1998).
Heart : How the Blood Gets Around the Body .
London:
Grolier.
Gaya Chicago
Walker, Richard.
Heart : How the Blood Gets Around the Body.
London:
Grolier,
1998.
Text.
Gaya MLA
Walker, Richard.
Heart : How the Blood Gets Around the Body.
London:
Grolier,
1998.
Text.
Gaya Turabian
Walker, Richard.
Heart : How the Blood Gets Around the Body.
London:
Grolier,
1998.
Print.