APA引文

Henderson, J. V. (1991). Principles of economics. D.C. Health.

Chicago Style (17th ed.) Citation

Henderson, J Vernon. Principles of Economics. Massachusetts: D.C. Health, 1991.

MLA引文

Henderson, J Vernon. Principles of Economics. D.C. Health, 1991.

警告：這些引文格式不一定是100％准確.