APA引文

Beardshaw, J. (1998). Economics: A student's guide (4th ed.). PEL.

芝加哥风格引文

Beardshaw, John. Economics: A Student's Guide. 4th ed. New York: PEL, 1998.

MLA引文

Beardshaw, John. Economics: A Student's Guide. 4th ed. PEL, 1998.

警告：这些引文格式不一定是100％准确.