APA引文

Samuelson, P. A. (1967). Economics: An introductory analysis. New York: McGraw-Hill Book Company.

Trích dẫn kiểu Chicago

Samuelson, Paul A. Economics: An Introductory Analysis. New York: McGraw-Hill Book Company, 1967.

MLA引文

Samuelson, Paul A. Economics: An Introductory Analysis. New York: McGraw-Hill Book Company, 1967.

警告：这些引文格式不一定是100％准确.