Sentence skills : a workbook for writers form A

 Langan, John;

Boston : McGraw-Hill , 2003

English skills with readings / John Langan

 Langan, John;

New York : McGraw-Hill , 2002

English skills with readings

 Langan, John.;

Boston, MA : McGraw-Hill , 2006

College writing skills, with readings

 Langan, John,;

Boston : McGraw-Hill , 2005

College writing skills

 Langan, John,;

New York : : McGraw-Hill , 2005

English skills

 Langan, John,;

Boston : : McGraw-Hill , 2006

Sentence skills :a workbook for writers : form B

 Langan, John,;

Boston : : McGraw-Hill , 2004

English skills with readings

 Langan, John;

Amerika : McGraw-Hill , 2012