APA引文
Borjas, G. J. (1999). Heaven's door: Immigration policy and the American economy. Princeton University Press.
芝加哥风格引文
Borjas, George J. Heaven's Door: Immigration Policy and the American Economy. Princeton, N.J.: Princeton University Press, 1999.
MLA引文
Borjas, George J. Heaven's Door: Immigration Policy and the American Economy. Princeton University Press, 1999.
警告：这些引文格式不一定是100％准确.