Berry, S. (1993). No condition is permanent: The social dynamics of agrarian change in sub-Saharan Africa. University of Wisconsin Press.
芝加哥风格引文Berry, Sara. No Condition Is Permanent: The Social Dynamics of Agrarian Change in Sub-Saharan Africa. Madison, Wis.: University of Wisconsin Press, 1993.
MLA引文Berry, Sara. No Condition Is Permanent: The Social Dynamics of Agrarian Change in Sub-Saharan Africa. University of Wisconsin Press, 1993.
警告：这些引文格式不一定是100％准确.