Gaya APA
Caldwell, John C. (1973).
The Population of Tropical Africa/JC Caldwell anf C Okonjo (4th).
London:
The Population Council.
Gaya Chicago
Caldwell, John C.
The Population of Tropical Africa/JC Caldwell anf C Okonjo.
4th
London:
The Population Council,
1973.
.
Gaya MLA
Caldwell, John C.
The Population of Tropical Africa/JC Caldwell anf C Okonjo.
4th
London:
The Population Council,
1973.
.
Gaya Turabian
Caldwell, John C.
The Population of Tropical Africa/JC Caldwell anf C Okonjo.
4th
London:
The Population Council,
1973.
.