APA引文

Lipsey, R. (1986). An intro to positive economics (6th.). ELBS.

芝加哥风格引文

Lipsey, Richard. An Intro to Positive Economics. 6th. London: ELBS, 1986.

MLA引文

Lipsey, Richard. An Intro to Positive Economics. 6th. ELBS, 1986.

警告：这些引文格式不一定是100％准确.