O'Sullivan, Arthur; Sheffrin, Steven M. Economics: Principles in Action. The Wall Street Journal:Classroom Edition 2nd. Upper Saddle River, New Jersey 07458: Pearson Prentice Hall: Addison Wesley Longman. 2003: 443,444 [January 2002] [May 3, 2009]. ISBN 0130630853. (原始内容存档于2011-06-22).
auburn.edu
Johnson, Paul M. Absolute advantage. A Glossary of Political Economy Terms. Department of Political Science, 7080 Haley Center, Auburn University, Auburn, AL 36849. 2005 [2009-05-03]. (原始内容存档于2009-03-09).
BLS Information. Glossary. U.S. Bureau of Labor Statistics Division of Information Services. February 28, 2008 [2009-05-05]. (原始内容存档于2009-05-06).
O'Sullivan, Arthur; Sheffrin, Steven M. Economics: Principles in Action. The Wall Street Journal:Classroom Edition 2nd. Upper Saddle River, New Jersey 07458: Pearson Prentice Hall: Addison Wesley Longman. 2003: 443,444 [January 2002] [May 3, 2009]. ISBN 0130630853. (原始内容存档于2011-06-22).
Absolute Advantage. Dictionary. Investopedia: A forbe's digital company. 2009 [2009-05-03]. (原始内容存档于2009-04-13).
Johnson, Paul M. Absolute advantage. A Glossary of Political Economy Terms. Department of Political Science, 7080 Haley Center, Auburn University, Auburn, AL 36849. 2005 [2009-05-03]. (原始内容存档于2009-03-09).
O'Sullivan, Arthur; Sheffrin, Steven M. Economics: Principles in Action. The Wall Street Journal:Classroom Edition 2nd. Upper Saddle River, New Jersey 07458: Pearson Prentice Hall: Addison Wesley Longman. 2003: 443,444 [January 2002] [May 3, 2009]. ISBN 0130630853. (原始内容存档于2011-06-22).