APA引文

PUGEL THOMAS A. (2007). INTERNATIONAL ECONOMICS (13TH.). MCGRAW HILL IRWIN.

芝加哥风格引文

PUGEL THOMAS A. INTERNATIONAL ECONOMICS. 13TH. BOSTON: MCGRAW HILL IRWIN, 2007.

MLA引文

PUGEL THOMAS A. INTERNATIONAL ECONOMICS. 13TH. MCGRAW HILL IRWIN, 2007.

警告：这些引文格式不一定是100％准确.