Allen, G. R. (1959). Agricultural marketing policies. B. Blackwell.
芝加哥风格引文Allen, George Rollason. Agricultural Marketing Policies. Oxford: B. Blackwell, 1959.
MLA引文Allen, George Rollason. Agricultural Marketing Policies. B. Blackwell, 1959.
警告：这些引文格式不一定是100％准确.