Gaya APA
Willis, T.
(1995).
Serengeti Plain : Wonder of the World
(
Cetakan 1)
.
Tanzania:
Raintree Steck-Vaugn.
Gaya MLA
Willis, Terri.
"Serengeti Plain : Wonder of the World".
Cetakan 1
Tanzania:
Raintree Steck-Vaugn,
1995.
Text.