APA引文

Levin, J. V. (1960). Export Economics Their pattern of Development in Historical Persspective.

Chicago Edition Citation

Levin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. :, 1960.

MLA引文

Levin, Jonathan V. Export Economics Their Pattern of Development in Historical Persspective. 1960.

警告：這些引文格式不一定是100％准確.