Samuelson, P. A. (1980). Economics. London: McGraw-Hill.
Trích dẫn kiểu ChicagoSamuelson, Paul A. Economics. London: McGraw-Hill, 1980.
MLA引文Samuelson, Paul A. Economics. London: McGraw-Hill, 1980.
警告：这些引文格式不一定是100％准确.
APA引文
Samuelson, P. A. (1980). Economics. London: McGraw-Hill.
Trích dẫn kiểu ChicagoSamuelson, Paul A. Economics. London: McGraw-Hill, 1980.
MLA引文Samuelson, Paul A. Economics. London: McGraw-Hill, 1980.