APA
on the early history of agriculture (1977 : ), . (1977). Proceeding on the early history of agriculture. : .
Chicago
on the early history of agriculture (1977 : ), . 1977. Proceeding on the early history of agriculture. : .
Harvard
on the early history of agriculture (1977 : ), . (1977). Proceeding on the early history of agriculture. : .
MLA
on the early history of agriculture (1977 : ), . Proceeding on the early history of agriculture. : . 1977.
