Gaya APA
The world-s population. (1993).
tempaterbit:
penerbit.
Gaya Chicago
The world-s population.
Edisi.
tempaterbit:
penerbit,
1993.
Text.
Gaya MLA
The world-s population.
Edisi.
tempaterbit:
penerbit,
1993.
Text.
Gaya Turabian
The world-s population.
tempaterbit:
penerbit,
1993.
Print.