APA引文

Case Karl E. (2018). Principles of Economics (12th.). Pearson.

Chicago Style (17th ed.) Citation

Case Karl E. Principles of Economics. 12th. Pearson, 2018.

MLA引文

Case Karl E. Principles of Economics. 12th. Pearson, 2018.

警告：這些引文格式不一定是100％准確.