APA引文

(1990). Natural gas: Its role and potential in economic development. Westview pr..

Chicago Style (17th ed.) Citation

Natural Gas: Its Role and Potential in Economic Development. Boulder: Westview pr., 1990.

MLA引文

Natural Gas: Its Role and Potential in Economic Development. Westview pr., 1990.

警告：這些引文格式不一定是100％准確.