Venables, A. (1991). A Customs Union with a Continuum of Products. CEPR.
芝加哥风格引文Venables, A. A Customs Union with a Continuum of Products. CEPR, 1991.
MLA引文Venables, A. A Customs Union with a Continuum of Products. CEPR, 1991.
警告：这些引文格式不一定是100％准确.
APA引文