Gaya APA
The prehistoric world. (1979).
tempaterbit:
penerbit.
Gaya Chicago
The prehistoric world.
Edisi.
tempaterbit:
penerbit,
1979.
Text.
Gaya MLA
The prehistoric world.
Edisi.
tempaterbit:
penerbit,
1979.
Text.
Gaya Turabian
The prehistoric world.
tempaterbit:
penerbit,
1979.
Print.