APA引文

Vethake, H. (1838). The principles of political economy. P. H. Nicklin & T. Johnson.

Chicago Style (17th ed.) Citation

Vethake, Henry. The Principles of Political Economy. Philadelphia: P. H. Nicklin & T. Johnson, 1838.

MLA引文

Vethake, Henry. The Principles of Political Economy. P. H. Nicklin & T. Johnson, 1838.

警告：這些引文格式不一定是100％准確.