Gaya APA
Clark, Colin. (1970).
The economics of subsistence agriculture .
London:
Macmillan and Co Lto.
Gaya Chicago
Clark, Colin.
The economics of subsistence agriculture.
London:
Macmillan and Co Lto,
1970.
.
Gaya MLA
Clark, Colin.
The economics of subsistence agriculture.
London:
Macmillan and Co Lto,
1970.
.
Gaya Turabian
Clark, Colin.
The economics of subsistence agriculture.
London:
Macmillan and Co Lto,
1970.
.