Essentials of business communicationMary Ellen Guffey, Dana Loewy · First published 2013Open the Tome
Canadian Business EnglishMary Ellen Guffey, Patricia Burke, Carolyn M. Seefer, Cathy Witlox · First published 2008Open the Tome
Mary Ellen Guffey's essentials of business communicationMary Ellen Guffey · First published 2007Open the Tome
Essentials of Business Communication (with Premium Website, 1 term (6 months) Printed Access Card)Mary Ellen Guffey, Dana Loewy · First published 2015Open the Tome
Essentials of business communication for English language learnersMary Ellen Guffey · First published 2009Open the Tome
