Analysis of information sources in references of the Wikipedia article "Tây Á" in Vietnamese language version.
|format= cần |url= (trợ giúp). Development Centre Studies. Paris, France: Organisation for Economic Co-operation and Development (OECD) (xuất bản 2003). ISBN 92-64-10412-7. LCCN 2004371607. OCLC 53465560.The UNSD notes that the "assignment of countries or areas to specific groupings is merely for statistical convenience and does not imply any assumption regarding political or other affiliation of countries or territories."
|format= cần |url= (trợ giúp). Development Centre Studies. Paris, France: Organisation for Economic Co-operation and Development (OECD) (xuất bản 2003). ISBN 92-64-10412-7. LCCN 2004371607. OCLC 53465560.