WALAI AutoLIB – RSSRSSWALAI AutoLibCollins Cobuild Learners Dictionary.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00028105<img src="https://www.opac.sskru.ac.th/bookcover/28105/28105-fc-t.gif" align="left" height="150" width="120"/>120718MacMillan English dictionary for advanced learners / editor-in-chief, Michael Rundell ; associate editor, Gwyneth Fox.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00028353<img src="https://www.opac.sskru.ac.th/bookcover/28353/28353-fc-t.gif" align="left" height="150" width="120"/>120727Cambridge advanced learner's dictionary.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00028144<img src="https://www.opac.sskru.ac.th/bookcover/28144/28144-fc-t.gif" align="left" height="150" width="120"/>120719Oxford elementary learner's dictionary /edited by Angela Crawley ; phonetics editor by Michael Ashby.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00005770<img src="https://www.opac.sskru.ac.th/bookcover/5770/5770-fc-t.gif" align="left" height="150" width="120"/>520602Merriam-Webster's advanced learner's English dictionary.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00029722<img src="https://www.opac.sskru.ac.th/bookcover/29722/29722-fc-t.gif" align="left" height="150" width="120"/>121020