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