English+Grammar+Guide(2016)

Consultant, British English Diane Hall has been working in English language teaching for over  30 years, as a teacher, trainer, editor, publisher, and writer. She has published several books, both general courses and grammar books,  for major English-language publishers. She has an MA in Applied Linguistics, and is currently also an Associate Lecturer in English grammar and functional linguistics at the Open University.  
Consultant, American English Professor Susan Barduhn is an experienced English-language  teacher, teacher trainer, and author, who has contributed to  numerous publications. In addition to directing English-language  courses in at least four different continents, she has been President  of the International Association of Teachers of English as  a Foreign Language, and an adviser to the British Council  and the US State Department. She is currently a Professor  at the School of International Training in Vermont, USA.